Lisitry ny karazana ao amin' ny Piper

Inty ny **lisitry ny karazana ao amin' ny ''Piper***, izay ahitana karazana miisa 2&nbsp;400. araka ny *Plants of the World Online* tamin' ny 18 Mey 2022. Ny *Piper* dia vondron-karazana ao amin' ny fianakavian-javamaniry *Piperaceae*.

== A ==

* *Piper abajoense* <small>Bornst.</small>
* *Piper abalienatum* <small>Trel.</small>
* *Piper abbadianum* <small>Yunck.</small>
* *Piper abbreviatum* <small>Opiz</small>
* *Piper abellinum* <small>Trel. & Yunck.</small>
* *Piper aberrans* <small>C.DC.</small>
* *Piper abutiloides* <small>(Kunth) Kunth ex Steud.</small>
* *Piper achoteanum* <small>Trel.</small>
* *Piper achotense* <small>Trel. & Yunck.</small>
* *Piper achromatolepis* <small>Trel.</small>
* *Piper achupallasense* <small>Yunck.</small>
* *Piper acre* <small>Blume</small>
* *Piper actae* <small>Trel.</small>
* *Piper acutamentum* <small>C.DC.</small>
* *Piper acutibracteum* <small>C.DC.</small>
* *Piper acutifolium* <small>Ruiz & Pav.</small>
* *Piper acutilimbum* <small>C.DC.</small>
* *Piper acutissimum* <small>Trel.</small>
* *Piper acutistigmum* <small>C.DC.</small>
* *Piper acutistipulum* <small>C.DC.</small>
* *Piper acutiusculum* <small>C.DC.</small>
* *Piper acutulum* <small>Trel.</small>
* *Piper adamatum* <small>Trel. & Standl.</small>
* *Piper addisonii* <small>Yunck.</small>
* *Piper adenandrum* <small>(Miq.) C.DC.</small>
* *Piper adenophlebium* <small>Trel.</small>
* *Piper admirabile* <small>Yunck.</small>
* *Piper adreptum* <small>Trel.</small>
* *Piper aduncum* <small>L.</small>
* *Piper aequale* <small>Vahl</small>
* *Piper aereum* <small>Trel.</small>
* *Piper aeruginosibaccum* <small>Trel.</small>
* *Piper affectans* <small>Trel.</small>
* *Piper affictum* <small>Trel.</small>
* *Piper afflictum* <small>Trel.</small>
* *Piper agellifolium* <small>Trel. & Yunck.</small>
* *Piper aghaense* <small>E.F.Guim. & Carv.-Silva</small>
* *Piper agostiniorum* <small>Steyerm.</small>
* *Piper aguacalientis* <small>Trel.</small>
* *Piper aguadulcense* <small>Yunck.</small>
* *Piper agusanense* <small>C.DC.</small>
* *Piper ailigandiense* <small>Callejas</small>
* *Piper alajuelanum* <small>Trel.</small>
* *Piper alatabaccum* <small>Trel. & Yunck.</small>
* *Piper alatipetiolatum* <small>Yunck.</small>
* *Piper albamentum* <small>C.DC.</small>
* *Piper albanense* <small>Yunck.</small>
* *Piper albiciliatum* <small>Yunck.</small>
* *Piper albidiflorum* <small>C.DC.</small>
* *Piper albidistigmatum* <small>C.DC.</small>
* *Piper albidum* <small>Kunth</small>
* *Piper albogranulatum* <small>Trel.</small>
* *Piper albomaculatum* <small>D.Dietr.</small>
* *Piper albopapillatum* <small>Trel.</small>
* *Piper albopilosum* <small>Yunck.</small>
* *Piper albopunctatum* <small>C.DC.</small>
* *Piper albopunctulatissimum* <small>Trel.</small>
* *Piper albozonatum* <small>C.DC.</small>
* *Piper albuginiferum* <small>Trel.</small>
* *Piper alexii* <small>Callejas</small>
* *Piper aleyreanum* <small>C.DC.</small>
* *Piper allardii* <small>Yunck.</small>
* *Piper allatum* <small>Trel.</small>
* *Piper allisum* <small>Trel.</small>
* *Piper alnoides* <small>(Kunth) Kunth ex Steud.</small>
* *Piper altevaginans* <small>Trel.</small>
* *Piper alushii* <small>Callejas</small>
* *Piper alveolatum* <small>Opiz</small>
* *Piper amalago* <small>L.</small>
* *Piper amoenum* <small>Yunck.</small>
* *Piper amparoense* <small>Yunck.</small>
* *Piper amphibium* <small>Trel.</small>
* *Piper amphioxys* <small>Trel.</small>
* *Piper amphitrichum* <small>Trel.</small>
* *Piper amphoricarpum* <small>Trel.</small>
* *Piper amplectenticaule* <small>Trel. & Yunck.</small>
* *Piper amplum* <small>(Kunth) Steud.</small>
* *Piper anastylum* <small>Trel.</small>
* *Piper andakiensis* <small>W.Trujillo-C. & Callejas</small>
* *Piper andreanum* <small>C.DC.</small>
* *Piper andresense* <small>Trel.</small>
* *Piper androgynum* <small>C.DC.</small>
* *Piper angamarcanum* <small>Sodiro ex C.DC.</small>
* *Piper angsiense* <small>I.M.Turner</small>
* *Piper angustifolium* <small>Lam.</small>
* *Piper angustipeltatum* <small>Merr.</small>
* *Piper anisophyllum* <small>Trel.</small>
* *Piper anisopleurum* <small>C.DC.</small>
* *Piper anisotis* <small>Hook.f.</small>
* *Piper anisotrichum* <small>C.DC.</small>
* *Piper anisum* <small>(Spreng.) Angely</small>
* *Piper annulatispicum* <small>Trel. & Yunck.</small>
* *Piper anonifolium* <small>(Kunth) Steud.</small>
* *Piper anonymum* <small>Trel.</small>
* *Piper anostachyum* <small>Yunck.</small>
* *Piper antherisobovatum* <small>Callejas</small>
* *Piper antioquiense* <small>C.DC.</small>
* *Piper antonense* <small>Callejas</small>
* *Piper apertum* <small>Trel.</small>
* *Piper apodum* <small>Trel.</small>
* *Piper appendiculatum* <small>(Benth.) C.DC.</small>
* *Piper apurimacanum* <small>Trel.</small>
* *Piper apus* <small>Trel.</small>
* *Piper aramanum* <small>C.DC.</small>
* *Piper araneatum* <small>Trel.</small>
* *Piper araquei* <small>Yunck.</small>
* *Piper arbelaezii* <small>Trel. & Yunck.</small>
* *Piper arboreum* <small>Aubl.</small>
* *Piper arborigaudens* <small>C.DC.</small>
* *Piper arborioccupans* <small>Trel. ex Callejas</small>
* *Piper arcessitum* <small>Trel.</small>
* *Piper archeri* <small>Trel. & Yunck.</small>
* *Piper arcteacuminatum* <small>Trel.</small>
* *Piper arcuatum* <small>Blume</small>
* *Piper arduum* <small>Trel.</small>
* *Piper arenicola* <small>Trel.</small>
* *Piper areolatum* <small>(Miq.) C.DC.</small>
* *Piper arfakianum* <small>C.DC.</small>
* *Piper argentamentum* <small>Trel. & Yunck.</small>
* *Piper argyrites* <small>Ridl. ex C.DC.</small>
* *Piper argyroneurum* <small>Hallier f.</small>
* *Piper argyrophyllum* <small>Miq.</small>
* *Piper arieianum* <small>C.DC.</small>
* *Piper aristolochiphyllum* <small>Quisumb.</small>
* *Piper armatum* <small>Trel. & Yunck.</small>
* *Piper aromaticaule* <small>Callejas</small>
* *Piper arrectispicum* <small>Trel.</small>
* *Piper arreptum* <small>Trel.</small>
* *Piper artanthe* <small>C.DC.</small>
* *Piper artanthopse* <small>C.DC.</small>
* *Piper articulatum* <small>A.Rich.</small>
* *Piper arunachalense* <small>Gajurel, Rethy & Y.Kumar</small>
* *Piper arundinetorum* <small>Trel.</small>
* *Piper ascendentispicum* <small>Trel.</small>
* *Piper asclepiadifolium* <small>Trel.</small>
* *Piper aserrianum* <small>Trel.</small>
* *Piper aspericaule* <small>Trel.</small>
* *Piper asperilimbum* <small>C.DC.</small>
* *Piper asperiusculum* <small>Kunth</small>
* *Piper asperulibaccum* <small>C.DC.</small>
* *Piper asplundii* <small>Yunck.</small>
* *Piper asterocarpum* <small>Trel.</small>
* *Piper asterostigmum* <small>Quisumb.</small>
* *Piper asterotrichum* <small>C.DC.</small>
* *Piper asymmetricum* <small>C.DC.</small>
* *Piper atlantidanum* <small>Trel.</small>
* *Piper atrichopus* <small>Trel.</small>
* *Piper atrobaccum* <small>Trel. & Yunck.</small>
* *Piper atroglandulosum* <small>Tebbs</small>
* *Piper atropremnon* <small>Trel.</small>
* *Piper attenuatamentum* <small>Trel.</small>
* *Piper attenuatum* <small>Buch.-Ham. ex Miq.</small>
* *Piper augustum* <small>Rudge</small>
* *Piper aulacospermum* <small>Callejas</small>
* *Piper auriculiferum* <small>Trel.</small>
* *Piper auriculilaminum* <small>Yunck.</small>
* *Piper aurilimbum* <small>C.DC.</small>
* *Piper auritifolium* <small>Trel.</small>
* *Piper auritum* <small>Kunth</small>
* *Piper aurorubrum* <small>C.DC.</small>
* *Piper austini* <small>Trel.</small>
* *Piper austrocaledonicum* <small>C.DC.</small>
* *Piper austromexicanum* <small>Trel.</small>
* *Piper austrosinense* <small>Y.C.Tseng</small>
* *Piper avanum* <small>Wall.</small>
* *Piper avellanum* <small>(Miq.) C.DC.</small>
* *Piper azuaiense* <small>Yunck.</small>
* *Piper azupizuanum* <small>Trel.</small>

== B ==

* *Piper baccans* <small>(Miq.) C.DC.</small>
* *Piper baccatum* <small>Blume</small>
* *Piper baculiferum* <small>Trel.</small>
* *Piper baezanum* <small>Sodiro ex C.DC.</small>
* *Piper baezense* <small>Trel.</small>
* *Piper baguionum* <small>C.DC.</small>
* *Piper bahianum* <small>Yunck.</small>
* *Piper bajanum* <small>Trel. & Yunck.</small>
* *Piper bakeri* <small>C.DC. ex Callejas</small>
* *Piper bakerianum* <small>C.DC.</small>
* *Piper balansae* <small>C.DC.</small>
* *Piper balsapuertanum* <small>Trel.</small>
* *Piper bambusifolium* <small>Y.C.Tseng</small>
* *Piper bangii* <small>C.DC.</small>
* *Piper bangkanum* <small>C.DC.</small>
* *Piper bantamense* <small>Blume</small>
* *Piper baracoanum* <small>León</small>
* *Piper baramense* <small>C.DC.</small>
* *Piper barbatum* <small>Kunth</small>
* *Piper barberi* <small>Gamble</small>
* *Piper barbicuspe* <small>Trel.</small>
* *Piper barbinerve* <small>Trel.</small>
* *Piper barbirostre* <small>Trel.</small>
* *Piper barbispicum* <small>C.DC.</small>
* *Piper barbosanum* <small>Trel. & Yunck.</small>
* *Piper barbulantherum* <small>Trel.</small>
* *Piper barbulatum* <small>C.DC.</small>
* *Piper barcoense* <small>Yunck.</small>
* *Piper barkleyi* <small>Yunck.</small>
* *Piper barretoi* <small>Yunck.</small>
* *Piper barriosense* <small>Trel. & Standl.</small>
* *Piper bartlingianum* <small>(Miq.) C.DC.</small>
* *Piper basegibbosum* <small>Callejas</small>
* *Piper basilobatum* <small>Trel. & Yunck.</small>
* *Piper batuanum* <small>C.DC.</small>
* *Piper beccarii* <small>C.DC.</small>
* *Piper begoniicolor* <small>Trel. & Yunck.</small>
* *Piper begoniifolium* <small>Hook. & Arn.</small>
* *Piper begoniiforme* <small>Yunck.</small>
* *Piper belicense* <small>Callejas</small>
* *Piper bellidifolium* <small>Yunck.</small>
* *Piper belloi* <small>Yunck.</small>
* *Piper bellum* <small>Yunck.</small>
* *Piper belterraense* <small>Yunck.</small>
* *Piper bengalense* <small>C.DC.</small>
* *Piper bennettianum* <small>C.DC.</small>
* *Piper berembunense* <small>Chaveer. & Sudmoon</small>
* *Piper berlandieri* <small>C.DC.</small>
* *Piper bermejanum* <small>Trel. & Yunck.</small>
* *Piper bernoullii* <small>C.DC. ex Callejas</small>
* *Piper berryi* <small>Steyerm.</small>
* *Piper betle* <small>L.</small>
* *Piper betleoides* <small>C.DC.</small>
* *Piper betloides* <small>Chaveer. & Tanomtong</small>
* *Piper biauritum* <small>C.DC.</small>
* *Piper bicorne* <small>Carv.-Silva, E.F.Guim. & L.A.Pereira</small>
* *Piper bikanum* <small>O.Schwartz</small>
* *Piper bilobulatum* <small>C.DC.</small>
* *Piper bipedale* <small>C.DC.</small>
* *Piper bipunctatum* <small>C.DC.</small>
* *Piper biritak* <small>Trel. & Standl.</small>
* *Piper bisasperatum* <small>Trel.</small>
* *Piper biseriatum* <small>C.DC.</small>
* *Piper bistigmatum* <small>C.DC.</small>
* *Piper blattarum* <small>Spreng.</small>
* *Piper blepharilepidum* <small>Trel.</small>
* *Piper boehmeriifolium* <small>(Miq.) Wall. ex C.DC.</small>
* *Piper boissierianum* <small>C.DC.</small>
* *Piper boivinii* <small>C.DC.</small>
* *Piper bojonyum* <small>C.DC.</small>
* *Piper bolanicum* <small>Schltr. ex R.O.Gardner</small>
* *Piper bolivaranum* <small>Yunck.</small>
* *Piper bolivianum* <small>C.DC.</small>
* *Piper bonii* <small>C.DC.</small>
* *Piper boorsroae* <small>C.DC.</small>
* *Piper boqueronense* <small>Callejas</small>
* *Piper boquetense* <small>Yunck.</small>
* *Piper boquianum* <small>Trel. & Yunck.</small>
* *Piper borbonense* <small>(Miq.) C.DC.</small>
* *Piper borneense* <small>N.E.Br.</small>
* *Piper bosnicanum* <small>C.DC.</small>
* *Piper botrytes* <small>Vahl</small>
* *Piper bourgeaui* <small>C.DC.</small>
* *Piper bowiei* <small>Yunck.</small>
* *Piper brachipilum* <small>Yunck.</small>
* *Piper brachistopodum* <small>C.DC.</small>
* *Piper brachypetiolatum* <small>Yunck.</small>
* *Piper brachypodon* <small>(Benth.) C.DC.</small>
* *Piper brachypus* <small>Trel.</small>
* *Piper brachystylum* <small>Trel.</small>
* *Piper brachytrichum* <small>Trel.</small>
* *Piper bradei* <small>Yunck.</small>
* *Piper brassii* <small>Trel.</small>
* *Piper bredemeyeri* <small>J.Jacq.</small>
* *Piper breedlovei* <small>Callejas</small>
* *Piper brenesii* <small>C.DC.</small>
* *Piper breve* <small>C.DC.</small>
* *Piper brevesanum* <small>Yunck.</small>
* *Piper breviamentum* <small>C.DC.</small>
* *Piper brevicuspe* <small>(Miq.) Merr.</small>
* *Piper brevifolium* <small>C.DC.</small>
* *Piper brevilimbum* <small>C.DC.</small>
* *Piper brevipedicellatum* <small>Bornst.</small>
* *Piper brevipedunculatum* <small>C.DC.</small>
* *Piper brevipes* <small>C.DC.</small>
* *Piper brevispicum* <small>C.DC.</small>
* *Piper brevistigmum* <small>C.DC.</small>
* *Piper brevistrigillosum* <small>Trel.</small>
* *Piper brevistylum* <small>C.DC.</small>
* *Piper brewsteri* <small>Callejas</small>
* *Piper brisasense* <small>Yunck.</small>
* *Piper brongniartii* <small>(Miq.) C.DC.</small>
* *Piper brownsbergense* <small>Yunck.</small>
* *Piper bryogetum* <small>C.DC.</small>
* *Piper buchii* <small>Urb.</small>
* *Piper buchingeri* <small>C.DC. ex Callejas</small>
* *Piper bullatifolium* <small>Sodiro</small>
* *Piper bullatilimbum* <small>Pilg.</small>
* *Piper bullosum* <small>C.DC.</small>
* *Piper bullulatum* <small>M.A.Jaram.</small>
* *Piper bullulifolium* <small>Trel.</small>
* *Piper burenii* <small>C.DC.</small>
* *Piper burgeri* <small>Callejas</small>
* *Piper burkillii* <small>Ridl.</small>
* *Piper buruanum* <small>Miq.</small>

== C ==

* *Piper cabagranum* <small>C.DC.</small>
* *Piper caballetense* <small>R.Bernal</small>
* *Piper caballo-cochanum* <small>Trel.</small>
* *Piper cabralanum* <small>C.DC.</small>
* *Piper cachimboense* <small>Yunck.</small>
* *Piper cacuminum* <small>C.DC.</small>
* *Piper cadenaense* <small>Tebbs</small>
* *Piper caducibracteum* <small>C.DC.</small>
* *Piper cajamarcanum* <small>Yunck.</small>
* *Piper cajambrense* <small>Trel. & Yunck.</small>
* *Piper caladiifolium* <small>(Miq.) C.DC.</small>
* *Piper calamistratum* <small>Trel.</small>
* *Piper calanyanum* <small>Trel. & Yunck.</small>
* *Piper calcaratum* <small>C.DC.</small>
* *Piper calcariforme* <small>Tebbs</small>
* *Piper calceolarium* <small>C.DC.</small>
* *Piper caldasianum* <small>(Miq.) Yunck.</small>
* *Piper caldense* <small>C.DC.</small>
* *Piper calderonii* <small>Trel. ex Callejas</small>
* *Piper caliendriferum* <small>Trel.</small>
* *Piper callcanense* <small>Trel.</small>
* *Piper callibracteum* <small>C.DC.</small>
* *Piper callosum* <small>Ruiz & Pav.</small>
* *Piper calocoma* <small>(Miq.) C.DC.</small>
* *Piper calophyllum* <small>C.DC.</small>
* *Piper calvarii* <small>S.M.Niño & Dorr</small>
* *Piper calvescens* <small>Trel.</small>
* *Piper calvescentinerve* <small>Trel.</small>
* *Piper calvibaccum* <small>Trel.</small>
* *Piper calvilimbum* <small>C.DC.</small>
* *Piper calvirameum* <small>C.DC.</small>
* *Piper cambessedesii* <small>(Miq.) C.DC.</small>
* *Piper cambodianum* <small>C.DC.</small>
* *Piper camiloi* <small>Yunck.</small>
* *Piper campanum* <small>Yunck.</small>
* *Piper camphoriferum* <small>C.DC.</small>
* *Piper campii* <small>Yunck.</small>
* *Piper camptostachys* <small>Urb.</small>
* *Piper canaense* <small>Standl.</small>
* *Piper canaliculum* <small>Tebbs</small>
* *Piper canastrense* <small>E.F.Guim. & Carv.-Silva</small>
* *Piper canavillosum* <small>Steyerm.</small>
* *Piper candelarianum* <small>C.DC.</small>
* *Piper candollei* <small>Sodiro</small>
* *Piper canescens* <small>J.Mathew</small>
* *Piper canovillosum* <small>Steyerm.</small>
* *Piper capacibracteum* <small>Trel.</small>
* *Piper capense* <small>L.f.</small>
* *Piper capillipes* <small>Trel. & Yunck.</small>
* *Piper capillistipes* <small>Trel.</small>
* *Piper capitarianum* <small>Yunck.</small>
* *Piper capitellatum* <small>C.DC.</small>
* *Piper captum* <small>Trel.</small>
* *Piper caquetanum* <small>Yunck.</small>
* *Piper caracolanum* <small>C.DC.</small>
* *Piper caranoense* <small>W.Trujillo-C.</small>
* *Piper cararense* <small>Trel. & Yunck.</small>
* *Piper carautensei* <small>E.F.Guim. & Carv.-Silva</small>
* *Piper carizalanum* <small>C.DC.</small>
* *Piper carlosii* <small>Trel. & Yunck.</small>
* *Piper carminis* <small>Trel.</small>
* *Piper carnibracteum* <small>C.DC.</small>
* *Piper carniconnectivum* <small>C.DC.</small>
* *Piper carnistigmum* <small>C.DC.</small>
* *Piper carpinteranum* <small>C.DC.</small>
* *Piper carpunya* <small>Ruiz & Pav.</small>
* *Piper carrapanum* <small>Trel.</small>
* *Piper carrilloanum* <small>C.DC.</small>
* *Piper cartagoanum* <small>C.DC.</small>
* *Piper casapiense* <small>(Miq.) C.DC.</small>
* *Piper casimirianum* <small>Hemsl.</small>
* *Piper cassinoides* <small>Opiz</small>
* *Piper casteloense* <small>Yunck.</small>
* *Piper castroanum* <small>Trel. & Yunck.</small>
* *Piper cataractarum* <small>Trel.</small>
* *Piper cathayanum* <small>M.G.Gilbert & N.H.Xia</small>
* *Piper cativalense* <small>Trel.</small>
* *Piper catripense* <small>Yunck.</small>
* *Piper caucaense* <small>Yunck.</small>
* *Piper caudatifolium* <small>Trel.</small>
* *Piper cavalcantei* <small>Yunck.</small>
* *Piper cavendishioides* <small>Trel. & Yunck.</small>
* *Piper cayoense* <small>Trel.</small>
* *Piper ceanothifolium* <small>Kunth</small>
* *Piper ceibense* <small>C.DC.</small>
* *Piper cejanum* <small>Trel. & Yunck.</small>
* *Piper celebicum* <small>Blume</small>
* *Piper celer* <small>Trel.</small>
* *Piper celsum* <small>Trel.</small>
* *Piper celtidiforme* <small>Opiz</small>
* *Piper cenocladum* <small>C.DC.</small>
* *Piper centroense* <small>Trel. & Yunck.</small>
* *Piper ceramicum* <small>(Miq.) C.DC.</small>
* *Piper cercidiphyllum* <small>Trel.</small>
* *Piper cernuum* <small>Vell.</small>
* *Piper cerrocampanum* <small>Callejas</small>
* *Piper cerronianum* <small>Steyerm.</small>
* *Piper certeguiense* <small>Trel. & Yunck.</small>
* *Piper chacaritaense* <small>Callejas</small>
* *Piper chagresianum* <small>Trel.</small>
* *Piper chalhuapuquianum* <small>Trel.</small>
* *Piper chamissonis* <small>(Miq.) Steud.</small>
* *Piper chanchamayanum* <small>Trel.</small>
* *Piper chanekii* <small>Trel.</small>
* *Piper changuinolanum* <small>Trel.</small>
* *Piper chantaranothaii* <small>Suwanph. & D.A.Simpson</small>
* *Piper chavicoides* <small>(Miq.) C.DC.</small>
* *Piper cheyennense* <small>Trel. & Standl.</small>
* *Piper chiadoense* <small>Yunck.</small>
* *Piper chiangdaoense* <small>Suwanph. & Chantar.</small>
* *Piper chiapasense* <small>Callejas</small>
* *Piper chimborazoense* <small>Yunck.</small>
* *Piper chimonanthifolium* <small>(Kunth) Kunth ex Steud.</small>
* *Piper chinantlense* <small>M.Martens & Galeotti</small>
* *Piper chinense* <small>Miq.</small>
* *Piper chiquihuitense* <small>Trel. & Standl.</small>
* *Piper chiriquinum* <small>C.DC.</small>
* *Piper chirripoense* <small>C.DC.</small>
* *Piper chlorostachyum* <small>C.DC.</small>
* *Piper choapamense* <small>Trel. ex Callejas</small>
* *Piper christyi* <small>C.DC.</small>
* *Piper chromatolepis* <small>Trel.</small>
* *Piper chrysoneurum* <small>Trel.</small>
* *Piper chrysostachyum* <small>C.DC.</small>
* *Piper chuarense* <small>M.A.Jaram. & Callejas</small>
* *Piper chumboense* <small>Yunck.</small>
* *Piper churruyacoanum* <small>Trel. & Yunck.</small>
* *Piper churumayu* <small>Ruiz & Pav.</small>
* *Piper cicatriculosum* <small>Trel. & Yunck.</small>
* *Piper cihuatlanense* <small>Bornst.</small>
* *Piper ciliatifolium* <small>Trel.</small>
* *Piper cilibracteum* <small>C.DC.</small>
* *Piper cililimbum* <small>Yunck.</small>
* *Piper ciliomarginatum* <small>Görts & Christenh.</small>
* *Piper cincinnatum* <small>Trel.</small>
* *Piper cinereocaule* <small>C.DC.</small>
* *Piper cinereum* <small>C.DC.</small>
* *Piper cingens* <small>C.DC.</small>
* *Piper ciniflonis* <small>Trel.</small>
* *Piper circumspectantis* <small>Trel.</small>
* *Piper cirratum* <small>Trel.</small>
* *Piper cisnerosense* <small>Trel. & Yunck.</small>
* *Piper cispontinum* <small>Trel.</small>
* *Piper claseanum* <small>Bornst.</small>
* *Piper clathratum* <small>Sodiro ex C.DC.</small>
* *Piper claudii* <small>C.DC.</small>
* *Piper claussenianum* <small>(Miq.) C.DC.</small>
* *Piper clavibracteum* <small>C.DC.</small>
* *Piper clavuligerum* <small>Trel.</small>
* *Piper clivicola* <small>Standl. & L.O.Williams</small>
* *Piper clypeatum* <small>Wall. ex Hook.f.</small>
* *Piper coactile* <small>Ridl.</small>
* *Piper coactipilum* <small>Trel.</small>
* *Piper coactoris* <small>Trel.</small>
* *Piper coariense* <small>Yunck.</small>
* *Piper cobanense* <small>Trel.</small>
* *Piper cobarianum* <small>Trel. & Yunck.</small>
* *Piper coccoloboides* <small>(Kunth) Kunth ex Steud.</small>
* *Piper cochleatum* <small>Sodiro</small>
* *Piper coclense* <small>Callejas</small>
* *Piper cocornanum* <small>Trel. & Yunck.</small>
* *Piper cocquericotense* <small>Trel.</small>
* *Piper coeloneurum* <small>Diels</small>
* *Piper coilostachyum* <small>C.DC.</small>
* *Piper colaphitolerans* <small>Trel.</small>
* *Piper colipanum* <small>C.DC.</small>
* *Piper colligatispicum* <small>Trel. & Yunck.</small>
* *Piper collinum* <small>C.DC.</small>
* *Piper colonense* <small>C.DC.</small>
* *Piper colotlipanense* <small>Bornst.</small>
* *Piper colubrinum* <small>Link</small>
* *Piper comasense* <small>Trel.</small>
* *Piper comatum* <small>Trel.</small>
* *Piper comayaguanum* <small>Trel.</small>
* *Piper come* <small>Trel. & Standl.</small>
* *Piper commutatum* <small>Steud.</small>
* *Piper compactum* <small>Trel.</small>
* *Piper concepcionis* <small>Trel.</small>
* *Piper concinnifolium* <small>Trel.</small>
* *Piper concretiflorum* <small>C.DC.</small>
* *Piper conditum* <small>Trel.</small>
* *Piper condotoense* <small>Trel. & Yunck.</small>
* *Piper conejoense* <small>Trel. & Yunck.</small>
* *Piper confertinodum* <small>(Trel. & Yunck.) M.A.Jaram. & Callejas</small>
* *Piper confusionis* <small>Trel.</small>
* *Piper confusum* <small>C.DC.</small>
* *Piper conibaccum* <small>C.DC.</small>
* *Piper conispicum* <small>Trel.</small>
* *Piper coniunctonis* <small>Callejas</small>
* *Piper conquistanum* <small>Yunck.</small>
* *Piper consanguineum* <small>(Kunth) Steud.</small>
* *Piper constanzanum* <small>(C.DC.) Urb.</small>
* *Piper contraverrugosum* <small>(Cuatrec.) R.Bernal</small>
* *Piper controversum* <small>Steud.</small>
* *Piper conversum* <small>Trel.</small>
* *Piper cooperi* <small>Yunck.</small>
* *Piper copacabanense* <small>Trel.</small>
* *Piper copeyanum* <small>(C.DC.) Trel.</small>
* *Piper coralfalgense* <small>C.DC.</small>
* *Piper corcovadense* <small>(Miq.) C.DC.</small>
* *Piper cordatilimbum* <small>Quisumb.</small>
* *Piper cordatum* <small>C.DC.</small>
* *Piper cordiforme* <small>Steyerm.</small>
* *Piper cordilimbum* <small>C.DC.</small>
* *Piper cordillerianum* <small>C.DC.</small>
* *Piper cordoncillo* <small>Trel.</small>
* *Piper cordovanum* <small>C.DC.</small>
* *Piper corei* <small>(Yunck.) R.Bernal</small>
* *Piper coriaceilimbum* <small>C.DC.</small>
* *Piper corintoananum* <small>Yunck.</small>
* *Piper cornifolium* <small>Kunth</small>
* *Piper cornilimbum* <small>C.DC.</small>
* *Piper coronanum* <small>Trel. & Standl.</small>
* *Piper coronatibracteum* <small>Trel.</small>
* *Piper corozalanum* <small>Trel.</small>
* *Piper corpulentispicum* <small>Trel. & Yunck.</small>
* *Piper corrugatum* <small>Kuntze</small>
* *Piper coruscans* <small>Kunth</small>
* *Piper corylistachyopsis* <small>Trel.</small>
* *Piper costaricense* <small>C.DC.</small>
* *Piper costatum* <small>C.DC.</small>
* *Piper costulatum* <small>C.DC.</small>
* *Piper courtallense* <small>P.K.Mukh.</small>
* *Piper cowanii* <small>(Yunck.) Yunck.</small>
* *Piper coyolesense* <small>Trel.</small>
* *Piper crassicaule* <small>Trel.</small>
* *Piper crassinervium* <small>Kunth</small>
* *Piper crassipedunculum* <small>Yunck.</small>
* *Piper crassipes* <small>Korth. ex Miq.</small>
* *Piper crassistilum* <small>Yunck.</small>
* *Piper crassum* <small>Blume</small>
* *Piper crebrinodum* <small>C.DC.</small>
* *Piper crenatifolium* <small>Trel. & Yunck.</small>
* *Piper crenulatibracteum* <small>C.DC.</small>
* *Piper crenulatum* <small>Steyerm.</small>
* *Piper cricamolense* <small>Trel.</small>
* *Piper criniovarium* <small>Yunck.</small>
* *Piper crispatum* <small>A.C.Sm.</small>
* *Piper cristalinanum* <small>Trel. & Yunck.</small>
* *Piper cristicola* <small>Trel.</small>
* *Piper cristinanum* <small>Trel. & Standl.</small>
* *Piper crocatum* <small>Ruiz & Pav.</small>
* *Piper cuasianum* <small>Standl.</small>
* *Piper cuatrecasasii* <small>(Trel. & Yunck.) R.Bernal</small>
* *Piper cubataonum* <small>C.DC.</small>
* *Piper cubeba* <small>L.f.</small>
* *Piper cubilquitzianum* <small>C.DC.</small>
* *Piper cucullatum* <small>Callejas</small>
* *Piper cufodontii* <small>Trel.</small>
* *Piper culebranum* <small>C.DC.</small>
* *Piper cumanense* <small>Kunth</small>
* *Piper cumaralense* <small>C.DC.</small>
* *Piper cumbasonum* <small>C.DC.</small>
* *Piper cumbotianum* <small>C.DC.</small>
* *Piper cuniculorum* <small>Trel. & Yunck.</small>
* *Piper cunninghamii* <small>Yunck.</small>
* *Piper cupreatum* <small>Trel.</small>
* *Piper curridabatanum* <small>Trel.</small>
* *Piper curtifolium* <small>C.DC.</small>
* *Piper curtilimbum* <small>C.DC.</small>
* *Piper curtipetiolum* <small>C.DC.</small>
* *Piper curtirachis* <small>W.C.Burger</small>
* *Piper curtisii* <small>C.DC.</small>
* *Piper curtispicum* <small>C.DC.</small>
* *Piper curtistilum* <small>C.DC.</small>
* *Piper curtistipes* <small>C.DC.</small>
* *Piper curvatipes* <small>Trel.</small>
* *Piper curvatum* <small>Ruiz & Pav.</small>
* *Piper curvinervium* <small>Callejas & Betancur</small>
* *Piper curvipilum* <small>Trel.</small>
* *Piper cuspidatum* <small>Desv.</small>
* *Piper cuspidibracteatum* <small>Yunck.</small>
* *Piper cuspidiflorum* <small>Callejas</small>
* *Piper cuspidilimbum* <small>C.DC.</small>
* *Piper cuspidispicum* <small>Trel.</small>
* *Piper cutucuense* <small>Yunck.</small>
* *Piper cuyabanum* <small>C.DC.</small>
* *Piper cuyunianum* <small>Steyerm.</small>
* *Piper cyanophyllum* <small>Trel.</small>
* *Piper cyphophyllopse* <small>Trel. & Yunck.</small>
* *Piper cyphophyllum* <small>C.DC.</small>
* *Piper cyprium* <small>Trel. & Yunck.</small>
* *Piper cyrtopodum* <small>(Miq.) C.DC.</small>
* *Piper cyrtostachys* <small>Ridl.</small>

== D ==

* *Piper dactylostigmum* <small>Yunck.</small>
* *Piper daedalum* <small>Trel.</small>
* *Piper daguanum* <small>C.DC.</small>
* *Piper damiaoshanense* <small>Y.C.Tseng</small>
* *Piper daniel-gonzalezii* <small>Trel.</small>
* *Piper darienense* <small>C.DC.</small>
* *Piper dasyoura* <small>(Miq.) C.DC.</small>
* *Piper dasypodum* <small>(Miq.) C.DC.</small>
* *Piper dasypogon* <small>C.DC.</small>
* *Piper davaoense* <small>C.DC.</small>
* *Piper davidianum* <small>C.DC.</small>
* *Piper davidsoniae* <small>Yunck.</small>
* *Piper dawsonii* <small>Trel.</small>
* *Piper deamii* <small>Trel.</small>
* *Piper decipiens* <small>(Miq.) C.DC.</small>
* *Piper decrescens* <small>(Miq.) C.DC.</small>
* *Piper decumanum* <small>L.</small>
* *Piper decurrens* <small>C.DC.</small>
* *Piper decurtispicum* <small>(Trel. & Yunck.) Callejas</small>
* *Piper dedititium* <small>Trel.</small>
* *Piper deductum* <small>Trel.</small>
* *Piper deflexispicum* <small>Trel.</small>
* *Piper degeneri* <small>A.C.Sm.</small>
* *Piper delectans* <small>Trel.</small>
* *Piper delicatum* <small>C.DC.</small>
* *Piper deliciasanum* <small>Steyerm.</small>
* *Piper delirioi* <small>Sarnaglia & E.F.Guim.</small>
* *Piper deltoideocarpum* <small>Trel.</small>
* *Piper demeraranum* <small>(Miq.) C.DC.</small>
* *Piper demoratum* <small>Trel.</small>
* *Piper dempoanum* <small>C.DC.</small>
* *Piper dendroamans* <small>Trel. ex Callejas</small>
* *Piper dennisii* <small>Trel.</small>
* *Piper densiciliatum* <small>Yunck.</small>
* *Piper denudatissimum* <small>Callejas</small>
* *Piper depressibaccum* <small>Trel.</small>
* *Piper descourtilsianum* <small>C.DC.</small>
* *Piper desultorium* <small>Trel.</small>
* *Piper detonsum* <small>Trel.</small>
* *Piper diazanum* <small>Trel.</small>
* *Piper dichotomum* <small>Ruiz & Pav.</small>
* *Piper dichroostachyum* <small>Trel. & Yunck.</small>
* *Piper diffamatum* <small>Trel. & Yunck.</small>
* *Piper diffundum* <small>Yunck.</small>
* *Piper diffusum* <small>Vahl</small>
* *Piper diguaense* <small>Yunck.</small>
* *Piper dilatatum* <small>Rich.</small>
* *Piper dimetrale* <small>C.DC.</small>
* *Piper dimorphophyllum* <small>Trel.</small>
* *Piper dimorphotrichum* <small>Yunck.</small>
* *Piper dimorphum* <small>Callejas</small>
* *Piper dindingsianum* <small>C.DC.</small>
* *Piper diospyrifolium* <small>(Kunth) Kunth ex Steud.</small>
* *Piper dipterocarpinum* <small>C.DC.</small>
* *Piper diquisanum* <small>C.DC.</small>
* *Piper discriminatum* <small>Trel. & Yunck.</small>
* *Piper disparifolium* <small>Trel.</small>
* *Piper disparinervium* <small>Callejas</small>
* *Piper disparipes* <small>Trel.</small>
* *Piper disparipilum* <small>C.DC.</small>
* *Piper dissimulans* <small>Trel.</small>
* *Piper distichum* <small>Trel. & Yunck.</small>
* *Piper distigmatum* <small>Yunck.</small>
* *Piper divaricatum* <small>G.Mey.</small>
* *Piper diversipilum* <small>Trel.</small>
* *Piper divortans* <small>Trel. & Yunck.</small>
* *Piper divulgatum* <small>Trel. & Yunck.</small>
* *Piper djabia* <small>C.DC.</small>
* *Piper dodsonii* <small>Yunck.</small>
* *Piper doiphukhaense* <small>Suwanph. & Chantar.</small>
* *Piper dolichostachyum* <small>M.G.Gilbert & N.H.Xia</small>
* *Piper dolichostylum* <small>Callejas & Betancur</small>
* *Piper dolichotrichum* <small>Yunck.</small>
* *Piper domingense* <small>C.DC.</small>
* *Piper donnell-smithii* <small>C.DC.</small>
* *Piper dotanum* <small>Trel.</small>
* *Piper douglasii* <small>Callejas</small>
* *Piper dravidii* <small>Lekhak, Kambale & S.R.Yadav</small>
* *Piper dryadum* <small>C.DC.</small>
* *Piper duartei* <small>E.F.Guim. & Carv.-Silva</small>
* *Piper duckei* <small>C.DC.</small>
* *Piper dukei* <small>Yunck.</small>
* *Piper dulce* <small>Trel.</small>
* *Piper dumeticola* <small>C.DC.</small>
* *Piper dumiformans* <small>C.DC.</small>
* *Piper dumosum* <small>Rudge</small>
* *Piper dunlapii* <small>Trel.</small>
* *Piper dunstervilleorum* <small>Steyerm.</small>
* *Piper durilignum* <small>C.DC.</small>
* *Piper durilimbum* <small>C.DC.</small>
* *Piper durionoides* <small>Suwanph. & Chantar.</small>
* *Piper durvilleanum* <small>(Miq.) Trel.</small>
* *Piper dussii* <small>C.DC.</small>

== E ==

* *Piper ecallosum* <small>Trel.</small>
* *Piper echeverrianum* <small>Trel.</small>
* *Piper echinocaule* <small>Yunck.</small>
* *Piper echinovarium* <small>Yunck.</small>
* *Piper ecuadorense* <small>Sodiro</small>
* *Piper edurum* <small>Trel.</small>
* *Piper edwallii* <small>Yunck.</small>
* *Piper ejuncidum* <small>Trel.</small>
* *Piper elasmophyllum* <small>Trel.</small>
* *Piper elatostema* <small>Hallier f.</small>
* *Piper elbancoanum* <small>Trel. & Yunck.</small>
* *Piper elbertii* <small>C.DC.</small>
* *Piper elcaranyanum* <small>Trel. & Yunck.</small>
* *Piper eldoradense* <small>Trel. ex Callejas</small>
* *Piper ellipticifolium* <small>Yunck.</small>
* *Piper ellipticolanceolatum* <small>(C.DC.) Trel.</small>
* *Piper ellsworthii* <small>(Trel. & Yunck.) R.Bernal</small>
* *Piper elmeri* <small>Merr.</small>
* *Piper elongatum* <small>Vahl</small>
* *Piper elparamoense* <small>Yunck.</small>
* *Piper emancipationis* <small>Trel.</small>
* *Piper emmerichianum* <small>Yunck.</small>
* *Piper emollitum* <small>Trel.</small>
* *Piper emygdioi* <small>Yunck.</small>
* *Piper enckeaespicum* <small>(Trel. & Yunck.) Callejas</small>
* *Piper endlicherianum* <small>(Miq.) Trel.</small>
* *Piper enenyasense* <small>Trel.</small>
* *Piper enganyanum* <small>Trel. & Yunck.</small>
* *Piper ensifolium* <small>Quisumb.</small>
* *Piper entradense* <small>Trel. & Yunck.</small>
* *Piper epigynium* <small>C.DC.</small>
* *Piper epilosipes* <small>Trel.</small>
* *Piper epunctatum* <small>Trel.</small>
* *Piper erectamentum* <small>C.DC.</small>
* *Piper erecticaule* <small>C.DC.</small>
* *Piper erectipilum* <small>Yunck.</small>
* *Piper erectum* <small>C.DC.</small>
* *Piper eriocladum* <small>Sodiro</small>
* *Piper eriopodon* <small>(Miq.) C.DC.</small>
* *Piper erubescentispica* <small>Trel.</small>
* *Piper erythrostachyum* <small>C.DC.</small>
* *Piper erythroxyloides* <small>R.E.Schult. & García-Barr.</small>
* *Piper escaleranum* <small>C.DC.</small>
* *Piper escuadranum* <small>Trel.</small>
* *Piper esperancanum* <small>Yunck.</small>
* *Piper eucalyptifolium* <small>Rudge</small>
* *Piper eucalyptiphyllum* <small>C.DC.</small>
* *Piper eucalyptolimbum* <small>C.DC.</small>
* *Piper eupodum* <small>C.DC.</small>
* *Piper euryphyllum* <small>C.DC.</small>
* *Piper eustylum* <small>Diels</small>
* *Piper evasum* <small>Trel.</small>
* *Piper evingeri* <small>Yunck.</small>
* *Piper evulsipilosum* <small>Trel.</small>
* *Piper ewanii* <small>Yunck.</small>
* *Piper exactum* <small>Trel. & Standl.</small>
* *Piper exasperatum* <small>Vahl</small>
* *Piper excavatum* <small>Ruiz & Pav.</small>
* *Piper excelsum* <small>G.Forst.</small>
* *Piper excessum* <small>Trel.</small>
* *Piper exiguicaule* <small>Yunck.</small>
* *Piper exiguispicum* <small>Trel.</small>
* *Piper expolitum* <small>Trel.</small>
* *Piper externum* <small>Trel.</small>

== F ==

* *Piper factum* <small>Trel.</small>
* *Piper fadyenii* <small>C.DC.</small>
* *Piper faecatum* <small>Trel.</small>
* *Piper fagifolium* <small>Trel.</small>
* *Piper falanense* <small>Trel. & Yunck.</small>
* *Piper falcifolium* <small>Trel.</small>
* *Piper falcigerum* <small>Trel.</small>
* *Piper falcispicum* <small>Yunck.</small>
* *Piper falconeri* <small>C.DC.</small>
* *Piper falculispicum* <small>Trel. & Yunck.</small>
* *Piper fallax* <small>Vahl</small>
* *Piper fallenii* <small>A.H.Gentry</small>
* *Piper fallens* <small>Trel.</small>
* *Piper fanshawei* <small>Yunck.</small>
* *Piper faroense* <small>Yunck.</small>
* *Piper fastiditum* <small>Trel. & Yunck.</small>
* *Piper faviculiferum* <small>Trel.</small>
* *Piper ferreyrae* <small>Yunck.</small>
* *Piper ferriei* <small>C.DC.</small>
* *Piper figlinum* <small>Trel.</small>
* *Piper filipedunculum* <small>C.DC.</small>
* *Piper filipes* <small>C.DC.</small>
* *Piper filiramosum* <small>Callejas</small>
* *Piper filistilum* <small>C.DC.</small>
* *Piper fimbrirachium* <small>Callejas</small>
* *Piper fimbriulatum* <small>C.DC.</small>
* *Piper firmifolium* <small>Trel.</small>
* *Piper firmolimbum* <small>C.DC.</small>
* *Piper fischerianum* <small>C.DC.</small>
* *Piper flagellicuspe* <small>Trel. & Yunck.</small>
* *Piper flavescens* <small>(C.DC.) Trel.</small>
* *Piper flavibaccum* <small>C.DC.</small>
* *Piper flavicans* <small>C.DC.</small>
* *Piper flavidum* <small>C.DC.</small>
* *Piper flavifructum* <small>Trel.</small>
* *Piper flaviramum* <small>C.DC.</small>
* *Piper flavispicum* <small>C.DC.</small>
* *Piper flavoviride* <small>C.DC.</small>
* *Piper flexuosum* <small>Rudge</small>
* *Piper fonteboanum* <small>Yunck.</small>
* *Piper foreroi* <small>A.H.Gentry</small>
* *Piper formici-tolerans* <small>Trel.</small>
* *Piper formosum* <small>(Miq.) C.DC.</small>
* *Piper forstenii* <small>C.DC.</small>
* *Piper fortalezanum* <small>Trel.</small>
* *Piper fortunaense* <small>Tebbs</small>
* *Piper fortunyoanum* <small>Trel.</small>
* *Piper fragile* <small>Benth.</small>
* *Piper fragiliforme* <small>C.DC.</small>
* *Piper fragrans* <small>Trel.</small>
* *Piper fraguanum* <small>Trel.</small>
* *Piper francovilleanum* <small>C.DC.</small>
* *Piper fresnoense* <small>Trel. & Yunck.</small>
* *Piper friedrichsthalii* <small>C.DC.</small>
* *Piper frioense* <small>Standl. & Steyerm.</small>
* *Piper froesii* <small>Yunck.</small>
* *Piper frostii* <small>Trel. ex Callejas</small>
* *Piper frustratum* <small>(Miq.) Boerl.</small>
* *Piper fuertesii* <small>C.DC.</small>
* *Piper fulgentifolium* <small>Yunck.</small>
* *Piper fulgidum* <small>Yunck.</small>
* *Piper fuligineum* <small>(Kunth) Steud.</small>
* *Piper fuliginosum* <small>Sodiro</small>
* *Piper fulvescenticaule* <small>Trel.</small>
* *Piper funckii* <small>C.DC.</small>
* *Piper fundacionense* <small>Steyerm.</small>
* *Piper fungiforme* <small>Spokes</small>
* *Piper fusagasuganum* <small>Trel. & Yunck.</small>
* *Piper fuscescentispicum* <small>C.DC.</small>
* *Piper fuscinervium* <small>Quisumb.</small>
* *Piper fuscispicum* <small>Trel.</small>
* *Piper fuscobracteatum* <small>Trel.</small>
* *Piper futuri* <small>Trel. & Yunck.</small>

== G ==

* *Piper galeatum* <small>(Miq.) C.DC.</small>
* *Piper galicianum* <small>Steyerm.</small>
* *Piper gallatlyi* <small>C.DC.</small>
* *Piper gamboanum* <small>(C.DC.) C.DC.</small>
* *Piper garagaranum* <small>C.DC.</small>
* *Piper gatunense* <small>Trel.</small>
* *Piper gaudichaudianum* <small>(Kunth) Kunth ex Steud.</small>
* *Piper gaumeri* <small>Trel.</small>
* *Piper generalense* <small>Trel.</small>
* *Piper geniculatum* <small>Sw.</small>
* *Piper gentlei* <small>Trel.</small>
* *Piper gentryi* <small>Steyerm.</small>
* *Piper genuflexum* <small>Trel.</small>
* *Piper georginum* <small>Trel. & Standl.</small>
* *Piper gerardoi* <small>Callejas</small>
* *Piper gerritii* <small>Callejas</small>
* *Piper gibbiflorum* <small>C.DC.</small>
* *Piper gibbilimbum* <small>C.DC.</small>
* *Piper gibbosum* <small>C.DC.</small>
* *Piper gigas* <small>Trel.</small>
* *Piper gilvescens* <small>Trel.</small>
* *Piper gilvibaccum* <small>Trel.</small>
* *Piper giordanoi* <small>E.F.Guim. & D.Monteiro</small>
* *Piper glaberrimum* <small>C.DC.</small>
* *Piper glabratum* <small>(Kunth) Steud.</small>
* *Piper glabrescens* <small>(Miq.) C.DC.</small>
* *Piper glabribaccum* <small>Trel.</small>
* *Piper glabribracteum* <small>Yunck.</small>
* *Piper glabrifolium* <small>C.DC.</small>
* *Piper glabrius* <small>Trel.</small>
* *Piper glanduligerum* <small>C.DC.</small>
* *Piper glandulosissimum* <small>Yunck.</small>
* *Piper globulantherum* <small>C.DC.</small>
* *Piper globulistigmum* <small>C.DC.</small>
* *Piper goeldii* <small>C.DC.</small>
* *Piper goesii* <small>Yunck.</small>
* *Piper golfitoense* <small>Callejas</small>
* *Piper gonagricum* <small>Trel.</small>
* *Piper gonocarpum* <small>Trel.</small>
* *Piper gorgonillense* <small>Trel. & Yunck.</small>
* *Piper gracile* <small>Ruiz & Pav.</small>
* *Piper gracilipes* <small>C.DC.</small>
* *Piper graciliramosum* <small>Yunck.</small>
* *Piper gracillimum* <small>Trel.</small>
* *Piper graeffei* <small>Warb.</small>
* *Piper grande* <small>Vahl</small>
* *Piper grandilimbum* <small>C.DC.</small>
* *Piper grandispicum* <small>C.DC.</small>
* *Piper grantii* <small>Yunck.</small>
* *Piper granulatum* <small>Trel.</small>
* *Piper granuligerum* <small>Trel.</small>
* *Piper gratum* <small>Trel.</small>
* *Piper graveolens* <small>C.DC.</small>
* *Piper grayumii* <small>Callejas</small>
* *Piper griffithii* <small>C.DC.</small>
* *Piper griseocaule* <small>Trel.</small>
* *Piper griseolimbum* <small>Trel. & Yunck.</small>
* *Piper griseopubens* <small>Trel.</small>
* *Piper griseum* <small>C.DC.</small>
* *Piper guacimonum* <small>(C.DC.) Trel.</small>
* *Piper guahamense* <small>C.DC.</small>
* *Piper gualeanum* <small>Sodiro ex C.DC.</small>
* *Piper guanacostense* <small>C.DC.</small>
* *Piper guanahacabibense* <small>Borhidi</small>
* *Piper guapense* <small>Yunck.</small>
* *Piper guatemalense* <small>Callejas</small>
* *Piper guatopoense* <small>Yunck.</small>
* *Piper guazacapanense* <small>Trel. & Standl.</small>
* *Piper guedesii* <small>C.DC.</small>
* *Piper guianense* <small>(Klotzsch) C.DC.</small>
* *Piper guineense* <small>Schumach. & Thonn.</small>
* *Piper gurupanum* <small>Yunck.</small>
* *Piper gutierrezii* <small>Yunck.</small>
* *Piper gymnocladum* <small>C.DC.</small>
* *Piper gymnophyllum* <small>C.DC.</small>

== H ==

* *Piper hainanense* <small>Hemsl.</small>
* *Piper halconense* <small>C.DC.</small>
* *Piper halesiifolium* <small>(Kunth) Kunth ex Steud.</small>
* *Piper hamiltonii* <small>C.DC.</small>
* *Piper hammelii* <small>Callejas</small>
* *Piper hancei* <small>Maxim.</small>
* *Piper harlingii* <small>Yunck.</small>
* *Piper harmandii* <small>C.DC.</small>
* *Piper hartii* <small>C.DC.</small>
* *Piper hartwegianum* <small>(Benth.) C.DC.</small>
* *Piper hassleri* <small>C.DC.</small>
* *Piper hatschbachii* <small>Yunck.</small>
* *Piper haughtii* <small>Trel. & Yunck.</small>
* *Piper havilandii* <small>C.DC.</small>
* *Piper hayneanum* <small>C.DC.</small>
* *Piper hebetifolium* <small>W.C.Burger</small>
* *Piper hederaceum* <small>(Miq.) C.DC.</small>
* *Piper heimii* <small>C.DC.</small>
* *Piper hemmendorffii* <small>C.DC.</small>
* *Piper heptandrum* <small>(Miq.) C.DC.</small>
* *Piper hermannii* <small>Trel. & Yunck.</small>
* *Piper hermes* <small>Trel. & Standl.</small>
* *Piper hermosanum* <small>Yunck.</small>
* *Piper herrerae* <small>Trel.</small>
* *Piper heterobracteum* <small>Steyerm.</small>
* *Piper heterocarpum* <small>Trel.</small>
* *Piper heterophyllum* <small>Ruiz & Pav.</small>
* *Piper heterotrichum* <small>C.DC.</small>
* *Piper heydei* <small>C.DC.</small>
* *Piper hians* <small>Trel.</small>
* *Piper hieronymi* <small>C.DC.</small>
* *Piper hillianum* <small>C.DC.</small>
* *Piper hippocrepiforme* <small>Steyerm.</small>
* *Piper hirtellipetiolum* <small>C.DC.</small>
* *Piper hirtilimbum* <small>Trel. & Yunck.</small>
* *Piper hirtovarium* <small>C.DC.</small>
* *Piper hispidiramum* <small>C.DC.</small>
* *Piper hispidiseptum* <small>Trel.</small>
* *Piper hispidum* <small>Sw.</small>
* *Piper hochiense* <small>Y.C.Tseng</small>
* *Piper hodgei* <small>Yunck.</small>
* *Piper hoehnei* <small>Yunck.</small>
* *Piper hoffmannseggianum* <small>Schult.</small>
* *Piper holdridgeanum* <small>W.C.Burger</small>
* *Piper holguinianum* <small>Trel.</small>
* *Piper hollrungii* <small>K.Schum. & Lauterb.</small>
* *Piper holstii* <small>Callejas</small>
* *Piper holtii* <small>Trel. & Yunck.</small>
* *Piper holtonii* <small>C.DC.</small>
* *Piper hondonadense* <small>Trel. & Yunck.</small>
* *Piper hongkongense* <small>C.DC.</small>
* *Piper hooglandii* <small>(I.Hutton & P.S.Green) M.A.Jaram.</small>
* *Piper hookeri* <small>Miq.</small>
* *Piper hookerianum* <small>(Miq.) C.DC.</small>
* *Piper hosei* <small>C.DC.</small>
* *Piper hosokawae* <small>Fosberg</small>
* *Piper hostmannianum* <small>(Miq.) C.DC.</small>
* *Piper huacachianum* <small>Trel.</small>
* *Piper huacapistanum* <small>Trel.</small>
* *Piper huallaganum* <small>Trel.</small>
* *Piper huantanum* <small>Trel.</small>
* *Piper huigranum* <small>Trel. & Yunck.</small>
* *Piper huilanum* <small>C.DC.</small>
* *Piper humaytanum* <small>Yunck.</small>
* *Piper humillimum* <small>C.DC.</small>
* *Piper humistratum* <small>Görts & K.U.Kramer</small>
* *Piper humoense* <small>Trel.</small>
* *Piper humorigaudens* <small>Trel.</small>
* *Piper hydrolapathum* <small>C.DC.</small>
* *Piper hylebates* <small>C.DC.</small>
* *Piper hylophilum* <small>C.DC.</small>
* *Piper hymenophyllum* <small>Miq.</small>
* *Piper hymenopodum* <small>Sodiro</small>
* *Piper hypoglaucum* <small>Miq.</small>
* *Piper hypoleucum* <small>Sodiro</small>

== I ==

* *Piper ilheusense* <small>Yunck.</small>
* *Piper illautum* <small>Trel.</small>
* *Piper imberbe* <small>Trel. & Standl.</small>
* *Piper immite* <small>Trel.</small>
* *Piper immutatum* <small>Trel.</small>
* *Piper imparipes* <small>Trel.</small>
* *Piper imperiale* <small>(Miq.) C.DC.</small>
* *Piper imperspicuibracteum* <small>Trel.</small>
* *Piper impube* <small>Trel.</small>
* *Piper inaequale* <small>C.DC.</small>
* *Piper inauspicatum* <small>Trel.</small>
* *Piper inclemens* <small>Trel. & Yunck.</small>
* *Piper incomptum* <small>Trel.</small>
* *Piper indecorum* <small>(Kunth) Kunth ex Steud.</small>
* *Piper indianonum* <small>Trel.</small>
* *Piper indiciflexum* <small>Trel.</small>
* *Piper indicum* <small>C.DC.</small>
* *Piper indignum* <small>Trel.</small>
* *Piper infossibaccatum* <small>A.Huang</small>
* *Piper infossum* <small>Y.C.Tseng</small>
* *Piper infraluteum* <small>Trel.</small>
* *Piper inhorrescens* <small>Trel.</small>
* *Piper injucundum* <small>Trel.</small>
* *Piper insectifugum* <small>C.DC. ex Seem.</small>
* *Piper insignilaminum* <small>Trel. & Yunck.</small>
* *Piper insignilimbum* <small>C.DC.</small>
* *Piper insipiens* <small>Trel. & Yunck.</small>
* *Piper insolens* <small>Trel.</small>
* *Piper instabilipes* <small>Trel.</small>
* *Piper insulicola* <small>Trel.</small>
* *Piper interitum* <small>Trel.</small>
* *Piper internibaccum* <small>C.DC.</small>
* *Piper internovarium* <small>C.DC.</small>
* *Piper interruptum* <small>Opiz</small>
* *Piper intonsum* <small>Trel.</small>
* *Piper intramarginatum* <small>Callejas</small>
* *Piper iquitosense* <small>Trel.</small>
* *Piper irazuanum* <small>C.DC.</small>
* *Piper irrasum* <small>Trel.</small>
* *Piper itatiaianum* <small>C.DC.</small>
* *Piper itayanum* <small>Trel.</small>
* *Piper ivonense* <small>Yunck.</small>
* *Piper ixocubvainense* <small>Standl. & Steyerm.</small>
* *Piper ixtlanense* <small>Callejas</small>

== J ==

* *Piper jaboncillanum* <small>Trel. & Yunck.</small>
* *Piper jacaleapaense* <small>Callejas</small>
* *Piper jacquemontianum* <small>(Kunth) Kunth ex Steud.</small>
* *Piper jactatum* <small>Trel. & Standl.</small>
* *Piper jalapense* <small>M.Martens & Galeotti</small>
* *Piper jaliscanum* <small>S.Watson</small>
* *Piper japurense* <small>(Miq.) C.DC.</small>
* *Piper japvonum* <small>C.DC.</small>
* *Piper jauaense* <small>Steyerm.</small>
* *Piper javariense* <small>Yunck.</small>
* *Piper javitense* <small>Kunth</small>
* *Piper jenkinsii* <small>C.DC.</small>
* *Piper jericoense* <small>Trel. & Yunck.</small>
* *Piper jianfenglingense* <small>C.Y.Hao & Y.H.Tan</small>
* *Piper josephii* <small>R.Bernal</small>
* *Piper jubatum* <small>Trel.</small>
* *Piper jubimarginatum* <small>Yunck.</small>
* *Piper julianii* <small>Callejas</small>
* *Piper juliflorum* <small>Nees & Mart.</small>
* *Piper jumayense* <small>Trel. & Standl.</small>

== K ==

* *Piper kadsura* <small>(Choisy) Ohwi</small>
* *Piper kandavuense* <small>A.C.Sm.</small>
* *Piper kanehiranum* <small>Trel.</small>
* *Piper kantetulense* <small>Trel.</small>
* *Piper kapruanum* <small>C.DC.</small>
* *Piper karpuragandhum* <small>J.Mathew & Yohannan</small>
* *Piper karwinskianum* <small>(Kunth) Kunth ex Steud.</small>
* *Piper kawakamii* <small>Hayata</small>
* *Piper kelleyi* <small>Tepe</small>
* *Piper kerberi* <small>C.DC.</small>
* *Piper keyanum* <small>C.DC.</small>
* *Piper khaoyaiense* <small>Suwanph. & D.A.Simpson</small>
* *Piper khasianum* <small>C.DC.</small>
* *Piper killipii* <small>Trel.</small>
* *Piper kimpitirikianum* <small>Trel.</small>
* *Piper kleinii* <small>Yunck.</small>
* *Piper klossii* <small>Ridl.</small>
* *Piper klotzschianum* <small>(Kunth) C.DC.</small>
* *Piper klugianum* <small>Trel.</small>
* *Piper klugii* <small>Yunck.</small>
* *Piper kongkandanum* <small>Suwanph. & Chantar.</small>
* *Piper konkintoense* <small>Trel.</small>
* *Piper koordersii* <small>C.DC.</small>
* *Piper kotanum* <small>C.DC.</small>
* *Piper kreangense* <small>C.DC.</small>
* *Piper krintjingense* <small>C.DC.</small>
* *Piper krukoffii* <small>Yunck.</small>
* *Piper kuhlmannii* <small>Yunck.</small>
* *Piper kunstleri* <small>C.DC.</small>
* *Piper kunthii* <small>(Miq.) C.DC.</small>
* *Piper kurgianum* <small>P.K.Mukh.</small>
* *Piper kurzii* <small>Ridl.</small>
* *Piper kwashoense* <small>Hayata</small>

== L ==

* *Piper labillardierei* <small>C.DC.</small>
* *Piper lacandonense* <small>Callejas</small>
* *Piper laceratibracteum* <small>Trel.</small>
* *Piper lacunosum* <small>Kunth</small>
* *Piper ladoradense* <small>Trel. & Yunck.</small>
* *Piper ladrillense* <small>Trel.</small>
* *Piper laedans* <small>Trel.</small>
* *Piper laetispicum* <small>C.DC.</small>
* *Piper laeve* <small>Vahl</small>
* *Piper laevibracteum* <small>Trel.</small>
* *Piper laevicarpum* <small>Yunck.</small>
* *Piper laevigatum* <small>Kunth</small>
* *Piper lagenibaccum* <small>Trel.</small>
* *Piper lagoaense* <small>C.DC.</small>
* *Piper laguna-cochanum* <small>Trel. & Yunck.</small>
* *Piper lagunaense* <small>Trel. & Yunck.</small>
* *Piper lainatakanum* <small>C.DC.</small>
* *Piper lamasense* <small>Trel.</small>
* *Piper lanatibracteum* <small>Trel.</small>
* *Piper lanatum* <small>Roxb.</small>
* *Piper lanceifolium* <small>Kunth</small>
* *Piper lanceolatum* <small>Ruiz & Pav.</small>
* *Piper lancetillanum* <small>Trel.</small>
* *Piper lanciferum* <small>Standl. & Steyerm.</small>
* *Piper lancilimbum* <small>Yunck.</small>
* *Piper landakanum* <small>C.DC.</small>
* *Piper langlassei* <small>C.DC.</small>
* *Piper lanosibracteum* <small>Trel.</small>
* *Piper lanosicaule* <small>Trel.</small>
* *Piper lanyuense* <small>K.N.Kung & Kun C.Chang</small>
* *Piper laosanum* <small>C.DC.</small>
* *Piper lapathifolium* <small>(Kunth) Steud.</small>
* *Piper larutanum* <small>C.DC.</small>
* *Piper lateoblongum* <small>S.Moore</small>
* *Piper lateovatum* <small>Trel.</small>
* *Piper laterifissum* <small>Trel.</small>
* *Piper lateripilosum* <small>Yunck.</small>
* *Piper latibracteum* <small>C.DC.</small>
* *Piper latifolium* <small>L.f.</small>
* *Piper laurifolium* <small>Mill.</small>
* *Piper laurinum* <small>Roem. & Schult.</small>
* *Piper lauterbachii* <small>C.DC.</small>
* *Piper lawrancei* <small>Trel. & Yunck.</small>
* *Piper laxivenum* <small>C.DC.</small>
* *Piper lechlerianum* <small>C.DC.</small>
* *Piper ledermannii* <small>C.DC.</small>
* *Piper lehmannianum* <small>C.DC.</small>
* *Piper lemaense* <small>Yunck.</small>
* *Piper lempirense* <small>Callejas</small>
* *Piper lenticellosum* <small>C.DC.</small>
* *Piper lepidotum* <small>D.Parodi</small>
* *Piper leptocladum* <small>C.DC.</small>
* *Piper leptoneuron* <small>C.DC.</small>
* *Piper leptostilum* <small>C.DC.</small>
* *Piper lepturum* <small>(Kunth) Kunth ex Steud.</small>
* *Piper lessertianum* <small>(Miq.) C.DC.</small>
* *Piper leticianum* <small>C.DC.</small>
* *Piper leucophaeocaule* <small>Trel.</small>
* *Piper leucophaeum* <small>Trel.</small>
* *Piper leucophlebium* <small>Trel.</small>
* *Piper leucophyllum* <small>(Miq.) C.DC.</small>
* *Piper leucostachyum* <small>Trel. & Yunck.</small>
* *Piper levilimbum* <small>Trel.</small>
* *Piper lhotzkyanum* <small>(Kunth) Kunth ex Steud.</small>
* *Piper liebmannii* <small>C.DC.</small>
* *Piper limae* <small>Yunck.</small>
* *Piper limosum* <small>Yunck.</small>
* *Piper lincolnense* <small>Trel.</small>
* *Piper lindbergii* <small>C.DC.</small>
* *Piper lindenianum* <small>C.DC.</small>
* *Piper lindenii* <small>(Miq.) C.DC.</small>
* *Piper linearifolium* <small>C.DC.</small>
* *Piper lineativillosum* <small>Trel. & Yunck.</small>
* *Piper lineatum* <small>Ruiz & Pav.</small>
* *Piper lineolatifolium* <small>Trel. & Yunck.</small>
* *Piper lingshuiense* <small>Y.C.Tseng</small>
* *Piper linguliforme* <small>Steyerm.</small>
* *Piper lippoldii* <small>Saralegui</small>
* *Piper littlei* <small>Yunck.</small>
* *Piper littorale* <small>C.DC.</small>
* *Piper llatanum* <small>Trel.</small>
* *Piper loefgrenii* <small>Yunck.</small>
* *Piper lonchites* <small>Schult.</small>
* *Piper longamentum* <small>C.DC.</small>
* *Piper longeacuminatum* <small>Trel.</small>
* *Piper longepetiolatum* <small>(C.DC.) Trel.</small>
* *Piper longestamineum* <small>Trel.</small>
* *Piper longestylosum* <small>C.DC.</small>
* *Piper longiappendiculatum* <small>Steyerm.</small>
* *Piper longiauriculatum* <small>Yunck.</small>
* *Piper longicaudatum* <small>Trel. & Yunck.</small>
* *Piper longicaule* <small>C.DC.</small>
* *Piper longichaetum* <small>Yunck.</small>
* *Piper longifilamentum* <small>C.DC.</small>
* *Piper longifolium* <small>Ruiz & Pav.</small>
* *Piper longimucronatum* <small>Yunck.</small>
* *Piper longipedicellatum* <small>Quisumb.</small>
* *Piper longipedunculatum* <small>C.DC.</small>
* *Piper longipes* <small>C.DC.</small>
* *Piper longipilosum* <small>C.DC.</small>
* *Piper longipilum* <small>C.DC.</small>
* *Piper longispicum* <small>C.DC.</small>
* *Piper longistigmum* <small>C.DC.</small>
* *Piper longistipulum* <small>C.DC.</small>
* *Piper longivaginans* <small>C.DC.</small>
* *Piper longum* <small>L.</small>
* *Piper loretoanum* <small>Trel.</small>
* *Piper losoense* <small>Trel. & Yunck.</small>
* *Piper lucigaudens* <small>C.DC.</small>
* *Piper lundellianum* <small>Trel.</small>
* *Piper lundellii* <small>Trel.</small>
* *Piper lundii* <small>C.DC.</small>
* *Piper lunulibracteatum* <small>C.DC.</small>
* *Piper lutescens* <small>C.DC.</small>
* *Piper luxii* <small>C.DC.</small>

== M ==

* *Piper macapaense* <small>Yunck.</small>
* *Piper macbrideanum* <small>Trel.</small>
* *Piper macedoi* <small>Yunck.</small>
* *Piper macerispicum* <small>Trel. & Yunck.</small>
* *Piper machadoanum* <small>C.DC.</small>
* *Piper machoense* <small>Callejas</small>
* *Piper machucanum* <small>Trel.</small>
* *Piper machupicchuense* <small>Trel.</small>
* *Piper macrocarpum* <small>C.DC.</small>
* *Piper macropiper* <small>Pennant</small>
* *Piper macropodum* <small>C.DC.</small>
* *Piper macropunctatum* <small>Yunck.</small>
* *Piper macrorhynchon* <small>(Miq.) C.DC.</small>
* *Piper macrostylum* <small>C.DC.</small>
* *Piper macrotrichum* <small>C.DC.</small>
* *Piper macrourum* <small>Kunth</small>
* *Piper maculatum* <small>Blume</small>
* *Piper madagascariense* <small>(Miq.) C.DC.</small>
* *Piper madeiranum* <small>Yunck.</small>
* *Piper magen* <small>B.Q.Cheng ex C.L.Long & Jun Yang bis</small>
* *Piper magnantherum* <small>C.DC.</small>
* *Piper magnificum* <small>Gentil ex Trel.</small>
* *Piper magnifolium* <small>(C.DC.) Trel.</small>
* *Piper magnilimbum* <small>C.DC.</small>
* *Piper magnispicum* <small>C.DC.</small>
* *Piper maingayi* <small>Hook.f.</small>
* *Piper majense* <small>Callejas</small>
* *Piper majusculum* <small>Blume</small>
* *Piper makruense* <small>C.DC.</small>
* *Piper malacocarpum* <small>K.Schum. & Lauterb.</small>
* *Piper malacophyllum* <small>(C.Presl) C.DC.</small>
* *Piper malgassicum* <small>Papini, Palchetti, M.Gori & Rota Nodari</small>
* *Piper malifolium* <small>Trel.</small>
* *Piper mamorense* <small>Yunck.</small>
* *Piper manabinum* <small>C.DC.</small>
* *Piper mananthum* <small>C.Wright</small>
* *Piper manausense* <small>Yunck.</small>
* *Piper mansericheanum* <small>Trel.</small>
* *Piper manzanillanum* <small>C.DC.</small>
* *Piper mapirense* <small>C.DC.</small>
* *Piper maraccasense* <small>Trel.</small>
* *Piper maranyonense* <small>Trel.</small>
* *Piper marequitense* <small>C.DC.</small>
* *Piper margaretae* <small>Trel.</small>
* *Piper margaritatum* <small>Trel.</small>
* *Piper marginatum* <small>Jacq.</small>
* *Piper marginecontinuum* <small>Callejas</small>
* *Piper marsupiiferum* <small>Trel.</small>
* *Piper martensianum* <small>C.DC.</small>
* *Piper martinense* <small>Trel.</small>
* *Piper marturetense* <small>Trel. & Yunck.</small>
* *Piper massiei* <small>C.DC.</small>
* *Piper mastersianum* <small>C.DC.</small>
* *Piper matanganum* <small>C.DC.</small>
* *Piper matinanum* <small>C.DC.</small>
* *Piper matthewsii* <small>C.DC.</small>
* *Piper matudae* <small>Lundell</small>
* *Piper maxonii* <small>C.DC.</small>
* *Piper maxwellianum* <small>C.DC.</small>
* *Piper mayanum* <small>Lundell</small>
* *Piper mazamariense* <small>Yunck.</small>
* *Piper mcphersonii* <small>Callejas</small>
* *Piper mcvaughii* <small>Bornst.</small>
* *Piper medinaense* <small>Yunck.</small>
* *Piper medinillifolium* <small>Quisumb.</small>
* *Piper mediocre* <small>C.DC.</small>
* *Piper meeboldii* <small>C.DC.</small>
* *Piper megacarpum* <small>J.Mathew</small>
* *Piper melanocaulon* <small>Quisumb.</small>
* *Piper melanocladum* <small>C.DC.</small>
* *Piper melanopremnum* <small>Trel. & Ekman</small>
* *Piper melanostachyum* <small>C.DC.</small>
* *Piper melanostictum* <small>(Miq.) C.DC.</small>
* *Piper melastomoides* <small>Schltdl. & Cham.</small>
* *Piper melchior* <small>(Sykes) M.A.Jaram.</small>
* *Piper mellibracteum* <small>Trel.</small>
* *Piper membranaceum* <small>C.DC.</small>
* *Piper mendezense* <small>Yunck.</small>
* *Piper mercedense* <small>Trel.</small>
* *Piper mercens* <small>Yunck.</small>
* *Piper meritum* <small>Trel.</small>
* *Piper merrillii* <small>C.DC.</small>
* *Piper mestonii* <small>F.M.Bailey</small>
* *Piper metallicum* <small>Hallier f.</small>
* *Piper metanum* <small>Trel. & Yunck.</small>
* *Piper methysticum* <small>G.Forst.</small>
* *Piper mexiae* <small>Trel. & Yunck.</small>
* *Piper mexicanum* <small>(Miq.) C.DC.</small>
* *Piper michelianum* <small>C.DC.</small>
* *Piper micoense* <small>Trel.</small>
* *Piper micranthera* <small>C.DC.</small>
* *Piper microstigma* <small>(Miq.) C.DC.</small>
* *Piper microtrichum* <small>C.DC.</small>
* *Piper middlesexense* <small>Trel. ex Callejas</small>
* *Piper miersinum* <small>(Miq.) C.DC.</small>
* *Piper miguel-conejoanum* <small>Trel. & Yunck.</small>
* *Piper mikanianum* <small>(Kunth) Steud.</small>
* *Piper mikaniifolium* <small>Trel.</small>
* *Piper mikii* <small>M.Hiroe</small>
* *Piper milciadesii* <small>Trel. & Yunck.</small>
* *Piper millegranum* <small>Yunck.</small>
* *Piper millepunctulatum* <small>Trel. & Yunck.</small>
* *Piper minasarum* <small>Steyerm.</small>
* *Piper minutantherum* <small>C.DC.</small>
* *Piper minuteauriculatum* <small>Callejas</small>
* *Piper minutescabiosum* <small>Trel.</small>
* *Piper minutiflorum* <small>Callejas</small>
* *Piper minutistigmum* <small>C.DC.</small>
* *Piper miquelianum* <small>C.DC.</small>
* *Piper mischocarpum* <small>Y.C.Tseng</small>
* *Piper mishuyacuense* <small>Trel.</small>
* *Piper mite* <small>Ruiz & Pav.</small>
* *Piper mitifolium* <small>Trel.</small>
* *Piper mituense* <small>Trel. & Yunck.</small>
* *Piper mocco-mocco* <small>Trel.</small>
* *Piper mocoanum* <small>Trel. & Yunck.</small>
* *Piper moense* <small>C.DC.</small>
* *Piper mohomoho* <small>C.DC.</small>
* *Piper mollicomum* <small>Kunth ex Steud.</small>
* *Piper mollipilosum* <small>C.DC.</small>
* *Piper mollissimum* <small>Blume</small>
* *Piper molliusculum* <small>Sodiro</small>
* *Piper monagasense* <small>Yunck.</small>
* *Piper monostigmum* <small>C.DC.</small>
* *Piper montanum* <small>C.DC.</small>
* *Piper montealegreanum* <small>Yunck.</small>
* *Piper monteluctans* <small>Trel.</small>
* *Piper monteverdeanum* <small>C.DC.</small>
* *Piper monteverdense* <small>Callejas</small>
* *Piper montium* <small>C.DC.</small>
* *Piper montivagum* <small>Ridl.</small>
* *Piper monurum* <small>Trel. & Yunck.</small>
* *Piper monzonense* <small>C.DC.</small>
* *Piper moreletii* <small>C.DC.</small>
* *Piper morelianum* <small>Yunck.</small>
* *Piper morianum* <small>Trel.</small>
* *Piper morilloi* <small>Steyerm.</small>
* *Piper morisonianum* <small>C.DC.</small>
* *Piper mornicola* <small>C.DC.</small>
* *Piper mosaicum* <small>Steyerm.</small>
* *Piper moscopanense* <small>Yunck.</small>
* *Piper mosenii* <small>(Trel.) C.DC.</small>
* *Piper mourae* <small>Yunck.</small>
* *Piper moyobambanum* <small>Trel.</small>
* *Piper mucronatum* <small>C.DC.</small>
* *Piper mucronulatum* <small>Blume</small>
* *Piper muelleri* <small>C.DC.</small>
* *Piper multiforme* <small>Trel. & Yunck.</small>
* *Piper multimammosum* <small>Trel.</small>
* *Piper multinodum* <small>C.DC.</small>
* *Piper multiplinervium* <small>C.DC.</small>
* *Piper multistigmum* <small>C.DC.</small>
* *Piper multitudinis* <small>Trel.</small>
* *Piper muluense* <small>O.Schwartz</small>
* *Piper munchanum* <small>C.DC.</small>
* *Piper mundum* <small>Trel.</small>
* *Piper muneyporense* <small>C.DC.</small>
* *Piper munyanum* <small>Trel.</small>
* *Piper muricatum* <small>Blume</small>
* *Piper murrayanum* <small>C.DC.</small>
* *Piper musteum* <small>Trel.</small>
* *Piper mutabile* <small>C.DC.</small>
* *Piper mutisii* <small>Trel. & Yunck.</small>
* *Piper myrmecophilum* <small>C.DC.</small>

== N ==

* *Piper nagaense* <small>C.DC.</small>
* *Piper nagelii* <small>C.DC.</small>
* *Piper nanayanum* <small>Trel.</small>
* *Piper napo-pastazanum* <small>Trel. & Yunck.</small>
* *Piper narinoense* <small>Yunck.</small>
* *Piper nasutum* <small>Trel.</small>
* *Piper neblinanum* <small>Yunck.</small>
* *Piper nebuligaudens* <small>Yunck.</small>
* *Piper neesianum* <small>C.DC.</small>
* *Piper neglectum* <small>Trel.</small>
* *Piper negritosense* <small>Trel.</small>
* *Piper negroense* <small>C.DC.</small>
* *Piper nematanthera* <small>C.DC.</small>
* *Piper nervulosum* <small>C.DC.</small>
* *Piper neurostachyum* <small>C.DC.</small>
* *Piper nicaraguense* <small>Callejas</small>
* *Piper nicoyanum* <small>C.DC.</small>
* *Piper nigribaccum* <small>C.DC.</small>
* *Piper nigricaule* <small>Trel.</small>
* *Piper nigriconnectivum* <small>C.DC.</small>
* *Piper nigrispicum* <small>C.DC.</small>
* *Piper nigropunctatum* <small>C.DC.</small>
* *Piper nigroramum* <small>C.DC.</small>
* *Piper nigrovirens* <small>C.DC.</small>
* *Piper nigrum* <small>L.</small>
* *Piper niteroiense* <small>Yunck.</small>
* *Piper nitidifolium* <small>C.DC.</small>
* *Piper nitidulifolium* <small>Trel.</small>
* *Piper nobile* <small>C.DC.</small>
* *Piper nodosum* <small>C.DC.</small>
* *Piper non-retrorsum* <small>Trel.</small>
* *Piper noveninervium* <small>C.DC.</small>
* *Piper novogalicianum* <small>Bornst.</small>
* *Piper novogranatense* <small>C.DC.</small>
* *Piper nubigenum* <small>(Kunth) Kunth ex Steud.</small>
* *Piper nudibaccatum* <small>Y.C.Tseng</small>
* *Piper nudifolium* <small>C.DC.</small>
* *Piper nudilimbum* <small>C.DC.</small>
* *Piper nudipedunculum* <small>C.DC.</small>
* *Piper nudiramum* <small>C.DC.</small>
* *Piper nudispicuum* <small>C.DC.</small>
* *Piper nudum* <small>C.DC.</small>
* *Piper numinica* <small>Callejas</small>
* *Piper nuncupatum* <small>Trel.</small>

== O ==

* *Piper oaxacanum* <small>C.DC.</small>
* *Piper obaldianum* <small>C.DC.</small>
* *Piper obatense* <small>O.Schwartz</small>
* *Piper obesispicum* <small>S.Moore</small>
* *Piper obiter-sericeum* <small>Trel.</small>
* *Piper oblanceolatum* <small>Trel.</small>
* *Piper oblancifolium* <small>Yunck.</small>
* *Piper obliqueovatum* <small>Trel.</small>
* *Piper obliquum* <small>Ruiz & Pav.</small>
* *Piper oblongatifolium* <small>Trel.</small>
* *Piper oblongatilimbum* <small>Trel.</small>
* *Piper oblongatum* <small>Opiz</small>
* *Piper oblongifructum* <small>Callejas</small>
* *Piper oblongum* <small>Kunth</small>
* *Piper obovantherum* <small>C.DC.</small>
* *Piper obovatifolium* <small>Trel.</small>
* *Piper obrutum* <small>Trel. & Yunck.</small>
* *Piper obscurifolium* <small>Callejas</small>
* *Piper obsessum* <small>Trel.</small>
* *Piper obtusilimbum* <small>C.DC.</small>
* *Piper obtusissimum* <small>Miq.</small>
* *Piper obtusistigmum* <small>C.DC.</small>
* *Piper obtusum* <small>C.DC.</small>
* *Piper obumbratifolium* <small>Trel.</small>
* *Piper obumbratum* <small>(Miq.) C.DC.</small>
* *Piper occultum* <small>Trel.</small>
* *Piper ocosingosense* <small>Callejas</small>
* *Piper oculatispicum* <small>Trel.</small>
* *Piper odoratum* <small>C.DC.</small>
* *Piper offensum* <small>Trel.</small>
* *Piper okamotoi* <small>M.Hiroe</small>
* *Piper oldhamii* <small>C.DC.</small>
* *Piper ollantaitambanum* <small>Trel.</small>
* *Piper omega* <small>Trel.</small>
* *Piper onus* <small>Trel.</small>
* *Piper opacibracteum* <small>Trel.</small>
* *Piper operosum* <small>Trel.</small>
* *Piper opizianum* <small>Fürnr.</small>
* *Piper oradendron* <small>Trel. & Standl.</small>
* *Piper oreophilum* <small>Ridl.</small>
* *Piper orizabanum* <small>C.DC.</small>
* *Piper ornatispicum* <small>Trel.</small>
* *Piper ornatum* <small>N.E.Br.</small>
* *Piper ornithorhynchum* <small>Trel.</small>
* *Piper oroense* <small>Yunck.</small>
* *Piper orosianum* <small>Trel.</small>
* *Piper orthostachyum* <small>(Kunth) Kunth ex Steud.</small>
* *Piper ospinense* <small>Trel. & Yunck.</small>
* *Piper ostii* <small>Trel.</small>
* *Piper otophorum* <small>C.DC.</small>
* *Piper otto-huberi* <small>Steyerm.</small>
* *Piper ottoniifolium* <small>C.DC.</small>
* *Piper ottonoides* <small>Yunck.</small>
* *Piper ovantherum* <small>C.DC.</small>
* *Piper ovatibaccum* <small>C.DC.</small>
* *Piper ovatilimbum* <small>C.DC.</small>
* *Piper ovatistigmum* <small>C.DC.</small>
* *Piper ovatum* <small>Vahl</small>
* *Piper oviedoi* <small>Urb.</small>
* *Piper oxycarpum* <small>C.DC.</small>
* *Piper oxyphyllum* <small>C.DC.</small>
* *Piper oxystachyum* <small>C.DC.</small>

== P ==

* *Piper pacacanum* <small>Trel.</small>
* *Piper pachoanum* <small>C.DC.</small>
* *Piper pachyarthrum* <small>K.Schum.</small>
* *Piper pachyphloium* <small>C.DC.</small>
* *Piper pachyphyllum* <small>Baker</small>
* *Piper padangense* <small>C.DC.</small>
* *Piper paganicum* <small>Trel.</small>
* *Piper palenquense* <small>Callejas</small>
* *Piper palestinanum* <small>Trel. & Yunck.</small>
* *Piper pallidibracteum* <small>C.DC.</small>
* *Piper pallididorsum* <small>Trel.</small>
* *Piper pallidifolium* <small>C.DC.</small>
* *Piper pallidilimbum* <small>C.DC.</small>
* *Piper pallidirubrum* <small>C.DC.</small>
* *Piper palmanum* <small>Trel.</small>
* *Piper palmasanum* <small>C.DC.</small>
* *Piper palmeri* <small>C.DC.</small>
* *Piper paludis* <small>Callejas</small>
* *Piper paludosum* <small>C.DC.</small>
* *Piper pamploanum* <small>Trel. & Yunck.</small>
* *Piper panamense* <small>C.DC.</small>
* *Piper pandoense* <small>Yunck.</small>
* *Piper pansamalanum* <small>C.DC.</small>
* *Piper pantjarense* <small>C.DC.</small>
* *Piper papillicarpum* <small>Trel.</small>
* *Piper papillicaule* <small>Trel. & Yunck.</small>
* *Piper papilliferum* <small>Steyerm.</small>
* *Piper papulaecaule* <small>Trel.</small>
* *Piper papulatum* <small>Trel.</small>
* *Piper paraense* <small>(Miq.) C.DC.</small>
* *Piper paraguassuanum* <small>C.DC.</small>
* *Piper paraisense* <small>Trel.</small>
* *Piper paralaevigatum* <small>Trel.</small>
* *Piper paramaribense* <small>C.DC.</small>
* *Piper paranum* <small>Yunck.</small>
* *Piper parapeltobryon* <small>Trel.</small>
* *Piper parcirameum* <small>C.DC.</small>
* *Piper parcum* <small>Trel. & Yunck.</small>
* *Piper parianum* <small>Yunck.</small>
* *Piper parmatum* <small>Dressler</small>
* *Piper parong* <small>Quisumb.</small>
* *Piper partiticuspe* <small>Trel.</small>
* *Piper parvantherum* <small>C.DC.</small>
* *Piper parvicordulatum* <small>Trel.</small>
* *Piper parvipedunculum* <small>C.DC.</small>
* *Piper parviramosum* <small>Callejas</small>
* *Piper pastasanum* <small>Diels</small>
* *Piper patens* <small>Opiz</small>
* *Piper patentifolium* <small>Trel.</small>
* *Piper patulum* <small>Bertol.</small>
* *Piper patzulinum* <small>Trel. & Standl.</small>
* *Piper paucartamboanum* <small>Trel.</small>
* *Piper paucinerve* <small>C.DC.</small>
* *Piper paucipilosum* <small>Yunck.</small>
* *Piper pauciramosum* <small>Yunck.</small>
* *Piper paucistigmum* <small>C.DC.</small>
* *Piper paulianifolium* <small>Trel.</small>
* *Piper pavasense* <small>Trel.</small>
* *Piper pavimentifolium* <small>Trel.</small>
* *Piper pavonii* <small>(Miq.) C.DC.</small>
* *Piper payanum* <small>Yunck.</small>
* *Piper pearcei* <small>Yunck.</small>
* *Piper pebasense* <small>Trel.</small>
* *Piper peculiare* <small>Trel. & Yunck.</small>
* *Piper pedicellare* <small>C.DC.</small>
* *Piper pedicellatum* <small>C.DC.</small>
* *Piper pedunculatum* <small>C.DC.</small>
* *Piper peepuloides* <small>Roxb.</small>
* *Piper pellitum* <small>C.DC.</small>
* *Piper peltatifolium* <small>C.Y.Hao, H.S.Wu & Y.H.Tan</small>
* *Piper peltatum* <small>L.</small>
* *Piper peltifolium* <small>Callejas</small>
* *Piper peltilimbum* <small>Yunck.</small>
* *Piper penangense* <small>(Miq.) C.DC.</small>
* *Piper pendens* <small>Trel.</small>
* *Piper pendentispicum* <small>Trel. & Yunck.</small>
* *Piper pendulirameum* <small>Trel. & Yunck.</small>
* *Piper pendulispicum* <small>C.DC.</small>
* *Piper pentagonum* <small>Trel.</small>
* *Piper pentandrum* <small>C.DC.</small>
* *Piper penyasense* <small>Trel. & Yunck.</small>
* *Piper peracuminatum* <small>C.DC.</small>
* *Piper perareolatum* <small>C.DC.</small>
* *Piper perbarbatum* <small>C.DC.</small>
* *Piper perbrevicaule* <small>Yunck.</small>
* *Piper perbrevispicum* <small>Yunck.</small>
* *Piper perciliatum* <small>Trel. & Yunck.</small>
* *Piper percostatum* <small>Yunck.</small>
* *Piper perditum* <small>Trel.</small>
* *Piper perenense* <small>Trel.</small>
* *Piper perfugii* <small>Trel.</small>
* *Piper pergamentifolium* <small>Trel. & Standl.</small>
* *Piper pergeniculatum* <small>Trel.</small>
* *Piper perhispidum* <small>C.DC.</small>
* *Piper perijaense* <small>Steyerm.</small>
* *Piper perinaequilongum* <small>Trel.</small>
* *Piper perlasense* <small>Yunck.</small>
* *Piper perlongipedunculum* <small>Trel. & Standl.</small>
* *Piper permolle* <small>Trel. & Yunck.</small>
* *Piper permucronatum* <small>Yunck.</small>
* *Piper perpallidum* <small>Ekman, Urb. & Trel.</small>
* *Piper perpilosum* <small>C.DC.</small>
* *Piper perpurgatum* <small>Trel.</small>
* *Piper perpusillum* <small>Callejas</small>
* *Piper perscabrifolium* <small>Yunck.</small>
* *Piper perstipulare* <small>Steyerm.</small>
* *Piper perstrigosum* <small>Yunck.</small>
* *Piper persubulatum* <small>C.DC.</small>
* *Piper pertinax* <small>Trel. & Yunck.</small>
* *Piper pertomentellum* <small>Trel. & Yunck.</small>
* *Piper pertractatum* <small>Trel.</small>
* *Piper peruligerum* <small>Trel.</small>
* *Piper pervelutinum* <small>Trel.</small>
* *Piper pervenosum* <small>C.DC.</small>
* *Piper perverrucosum* <small>Trel. & Yunck.</small>
* *Piper pervicax* <small>Trel.</small>
* *Piper pervillosum* <small>Trel.</small>
* *Piper pervulgatum* <small>Trel.</small>
* *Piper pervulsum* <small>Trel. & Yunck.</small>
* *Piper petens* <small>Trel.</small>
* *Piper petiolare* <small>C.DC.</small>
* *Piper pexum* <small>Trel.</small>
* *Piper phaeophyllum* <small>Trel. & Standl.</small>
* *Piper phalangense* <small>C.DC.</small>
* *Piper phanerolepidum* <small>Trel.</small>
* *Piper phaneropus* <small>Trel.</small>
* *Piper philippinum* <small>Miq.</small>
* *Piper philodendon* <small>Ridl.</small>
* *Piper philodendroides* <small>Standl. & Steyerm.</small>
* *Piper phuwuaense* <small>Chaveer. & Tanee</small>
* *Piper phyllostictum* <small>(Miq.) C.DC.</small>
* *Piper phytolaccifolium* <small>Opiz</small>
* *Piper picardae* <small>C.DC.</small>
* *Piper picobonitoense* <small>F.G.Coe & Bornst.</small>
* *Piper piedadesense* <small>Trel.</small>
* *Piper piedecuestanum* <small>Trel. & Yunck.</small>
* *Piper pileatum* <small>Trel.</small>
* *Piper pilgeri* <small>C.DC.</small>
* *Piper pilibracteum* <small>Trel. & Yunck.</small>
* *Piper piliovarium* <small>Yunck.</small>
* *Piper pilirameum* <small>C.DC.</small>
* *Piper pilosissimum* <small>Yunck.</small>
* *Piper pilosiusculum* <small>Opiz</small>
* *Piper pilovarium* <small>Yunck.</small>
* *Piper piluliferifolium* <small>Trel. & Yunck.</small>
* *Piper piluliferum* <small>Kunth</small>
* *Piper pinaresanum* <small>Trel. & Yunck.</small>
* *Piper pinedoana* <small>Trel.</small>
* *Piper pinetorum* <small>Standl. & Steyerm.</small>
* *Piper pingbienense* <small>Y.C.Tseng</small>
* *Piper pinguifolium* <small>C.DC.</small>
* *Piper pinoganense* <small>Trel.</small>
* *Piper pinuna-negroense* <small>Trel. & Yunck.</small>
* *Piper piojoanum* <small>Trel. & Yunck.</small>
* *Piper piresii* <small>Yunck.</small>
* *Piper piscatorum* <small>Trel. & Yunck.</small>
* *Piper pitalitoense* <small>Yunck.</small>
* *Piper pittieri* <small>C.DC.</small>
* *Piper plagiophyllum* <small>K.Schum. & Lauterb.</small>
* *Piper planadosense* <small>Trel. & Standl.</small>
* *Piper planipes* <small>Trel.</small>
* *Piper planitiei* <small>Trel. & Yunck.</small>
* *Piper platylobum* <small>Sodiro</small>
* *Piper playa-blancanum* <small>Trel.</small>
* *Piper plumanum* <small>C.DC.</small>
* *Piper plumbeicolor* <small>Trel.</small>
* *Piper plurinervosum* <small>Yunck.</small>
* *Piper poasanum* <small>C.DC.</small>
* *Piper poeppigii* <small>(Kunth) Steud.</small>
* *Piper pogonioneuron* <small>Trel. & Standl.</small>
* *Piper poiteanum* <small>Steud.</small>
* *Piper politaereum* <small>Trel.</small>
* *Piper politifolium* <small>C.DC.</small>
* *Piper politii* <small>Yunck.</small>
* *Piper politum* <small>C.DC.</small>
* *Piper polyneurum* <small>C.DC.</small>
* *Piper polysyphonum* <small>C.DC.</small>
* *Piper polytrichum* <small>C.DC.</small>
* *Piper ponapense* <small>C.DC.</small>
* *Piper ponendum* <small>Trel.</small>
* *Piper ponesheense* <small>C.DC.</small>
* *Piper ponganum* <small>Trel.</small>
* *Piper pontis* <small>Trel.</small>
* *Piper popayanense* <small>C.DC.</small>
* *Piper poporense* <small>Trel. & Yunck.</small>
* *Piper populifolium* <small>Opiz</small>
* *Piper porphyrophyllum* <small>(Lindl.) N.E.Br.</small>
* *Piper porrectum* <small>C.DC.</small>
* *Piper portobellense* <small>C.DC.</small>
* *Piper porveniricola* <small>Trel.</small>
* *Piper poscitum* <small>Trel. & Yunck.</small>
* *Piper positum* <small>Trel.</small>
* *Piper postelsianum* <small>Maxim.</small>
* *Piper posusanum* <small>Trel.</small>
* *Piper potamophilum* <small>Trel. & Yunck.</small>
* *Piper pothoides* <small>(Miq.) Wall. ex C.DC.</small>
* *Piper pothophyllum* <small>Trel.</small>
* *Piper praeacutilimbum* <small>C.DC.</small>
* *Piper praemollitum* <small>Trel.</small>
* *Piper praesagium* <small>Trel. & Yunck.</small>
* *Piper premnospicum* <small>Tebbs</small>
* *Piper prianamense* <small>C.DC.</small>
* *Piper prietoi* <small>Yunck.</small>
* *Piper prismaticum* <small>C.DC.</small>
* *Piper procerifolium* <small>C.DC.</small>
* *Piper procerum* <small>Trel.</small>
* *Piper prodigum* <small>Trel.</small>
* *Piper protracticuspidatum* <small>Trel. & Yunck.</small>
* *Piper protractispicum* <small>C.DC.</small>
* *Piper protractum* <small>C.DC.</small>
* *Piper provulgatum* <small>Trel. & Yunck.</small>
* *Piper prunifolium* <small>J.Jacq.</small>
* *Piper pseudamboinense* <small>C.DC.</small>
* *Piper pseudoacreanum* <small>Steyerm.</small>
* *Piper pseudoaduncum* <small>C.DC.</small>
* *Piper pseudoaequale* <small>Steyerm.</small>
* *Piper pseudoalbuginiferum* <small>Trel.</small>
* *Piper pseudoarboreum* <small>Yunck.</small>
* *Piper pseudoasperifolium* <small>C.DC.</small>
* *Piper pseudobarbatum* <small>C.DC.</small>
* *Piper pseudobredemeyeri* <small>Steyerm.</small>
* *Piper pseudobumbratum* <small>C.DC.</small>
* *Piper pseudocallosum* <small>Trel.</small>
* *Piper pseudocativalense* <small>Trel.</small>
* *Piper pseudodelectans* <small>Callejas</small>
* *Piper pseudodilatatum* <small>C.DC.</small>
* *Piper pseudodivulgatum* <small>Steyerm.</small>
* *Piper pseudoeucalyptifolium* <small>Trel. & Yunck.</small>
* *Piper pseudofallens* <small>Callejas</small>
* *Piper pseudofimbriulatum* <small>Trel.</small>
* *Piper pseudoflexuosum* <small>Trel.</small>
* *Piper pseudofuligineum* <small>C.DC.</small>
* *Piper pseudogaragaranum* <small>Trel.</small>
* *Piper pseudoglabrifolium* <small>Trel.</small>
* *Piper pseudogrande* <small>Yunck.</small>
* *Piper pseudohastulatum* <small>Steyerm.</small>
* *Piper pseudolanceifolium* <small>Trel.</small>
* *Piper pseudolindenii* <small>C.DC.</small>
* *Piper pseudomatico* <small>Trel.</small>
* *Piper pseudomunchanum* <small>Trel.</small>
* *Piper pseudonigrum* <small>C.DC.</small>
* *Piper pseudopedicellatum* <small>P.K.Mukh.</small>
* *Piper pseudoperbrevicaule* <small>Callejas</small>
* *Piper pseudoperfugii* <small>Callejas</small>
* *Piper pseudoperuvianum* <small>C.DC.</small>
* *Piper pseudopopayanense* <small>Trel. & Yunck.</small>
* *Piper pseudopothifolium* <small>C.DC.</small>
* *Piper pseudoschippianum* <small>Callejas</small>
* *Piper pseudovariabile* <small>Trel.</small>
* *Piper pseudoviridicaule* <small>Trel.</small>
* *Piper pseudovulgatum* <small>Steyerm.</small>
* *Piper psilophyllum* <small>C.DC.</small>
* *Piper psilorhachis* <small>C.DC.</small>
* *Piper psilostachyum* <small>Kunth</small>
* *Piper psittacorum* <small>Endl.</small>
* *Piper pterocladum* <small>C.DC.</small>
* *Piper pubarulipes* <small>C.DC.</small>
* *Piper pubens* <small>Trel.</small>
* *Piper puberulescens* <small>Trel.</small>
* *Piper puberuliciliatum* <small>Yunck.</small>
* *Piper puberulidrupum* <small>Yunck.</small>
* *Piper puberulilimbum* <small>C.DC.</small>
* *Piper puberulinerva* <small>C.DC.</small>
* *Piper puberulirameum* <small>C.DC.</small>
* *Piper puberulispicum* <small>C.DC.</small>
* *Piper puberulum* <small>(Benth.) Seem.</small>
* *Piper pubibaccum* <small>C.DC.</small>
* *Piper pubicatulum* <small>C.DC.</small>
* *Piper pubinerve* <small>C.DC.</small>
* *Piper pubinervulum* <small>C.DC.</small>
* *Piper pubiovarium* <small>Yunck.</small>
* *Piper pubipedunculum* <small>C.DC.</small>
* *Piper pubipes* <small>C.DC.</small>
* *Piper pubipetiolum* <small>C.DC.</small>
* *Piper pubirhache* <small>C.DC.</small>
* *Piper pubistipulum* <small>C.DC.</small>
* *Piper pubisubmarginalum* <small>Yunck.</small>
* *Piper pubivaginatum* <small>Steyerm.</small>
* *Piper puente-altoanum* <small>Trel.</small>
* *Piper pulchrum* <small>C.DC.</small>
* *Piper pulleanum* <small>Yunck.</small>
* *Piper pullibaccum* <small>Trel.</small>
* *Piper pullibracteatum* <small>Trel.</small>
* *Piper puncticulatum* <small>Ridl.</small>
* *Piper punctiunculatum* <small>Trel.</small>
* *Piper punctulantherum* <small>C.DC.</small>
* *Piper punctulatum* <small>Standl. & Steyerm.</small>
* *Piper puniceum* <small>Trel.</small>
* *Piper puntarenasense* <small>Callejas</small>
* *Piper puraceanum* <small>Trel. & Yunck.</small>
* *Piper purdiei* <small>C.DC.</small>
* *Piper purpusianum* <small>Trel.</small>
* *Piper purulentum* <small>Trel. & Yunck.</small>
* *Piper purusanum* <small>Yunck.</small>
* *Piper pustulatum* <small>Yunck.</small>
* *Piper pustulicaule* <small>Trel.</small>
* *Piper putumayoense* <small>Trel. & Yunck.</small>
* *Piper puyoense* <small>Yunck.</small>
* *Piper pygmaeum* <small>Yunck.</small>
* *Piper pykarahense* <small>C.DC.</small>

== Q ==

* *Piper quadratilimbum* <small>Trel.</small>
* *Piper quadratiovarium* <small>Yunck.</small>
* *Piper quicheanum* <small>Callejas</small>
* *Piper quimirianum* <small>Trel.</small>
* *Piper quinqueangulatum* <small>Miq.</small>
* *Piper quinquenervium* <small>Warb.</small>
* *Piper quitense* <small>C.DC.</small>

== R ==

* *Piper raapii* <small>C.DC.</small>
* *Piper rafflesii* <small>(Miq.) C.DC.</small>
* *Piper raizudoanum* <small>Trel. & Yunck.</small>
* *Piper ramirezii* <small>Callejas</small>
* *Piper ramosense* <small>Yunck.</small>
* *Piper ramosii* <small>C.DC.</small>
* *Piper rarispicum* <small>C.DC.</small>
* *Piper rarum* <small>C.DC.</small>
* *Piper rasile* <small>Trel.</small>
* *Piper recensitum* <small>Trel.</small>
* *Piper recessum* <small>R.O.Gardner</small>
* *Piper rechingeri* <small>C.DC.</small>
* *Piper recreoense* <small>Trel.</small>
* *Piper rectamentum* <small>Trel.</small>
* *Piper recuperatum* <small>Trel.</small>
* *Piper redactum* <small>Trel.</small>
* *Piper reductipes* <small>Trel.</small>
* *Piper regale* <small>C.DC.</small>
* *Piper regnellii* <small>(Miq.) C.DC.</small>
* *Piper reinwardtianum* <small>(Miq.) C.DC.</small>
* *Piper reitzii* <small>Yunck.</small>
* *Piper relaxatum* <small>Trel.</small>
* *Piper relictum* <small>Lekhak, Kambale & S.R.Yadav</small>
* *Piper rematense* <small>Trel.</small>
* *Piper remotinervium* <small>Görts</small>
* *Piper renitens* <small>(Miq.) Yunck.</small>
* *Piper reptabundum* <small>C.DC.</small>
* *Piper resalutatum* <small>Trel.</small>
* *Piper restio* <small>Trel.</small>
* *Piper restrictum* <small>Trel.</small>
* *Piper retalhuleuense* <small>Trel. & Standl.</small>
* *Piper reticulatum* <small>L.</small>
* *Piper reticulosum* <small>Opiz</small>
* *Piper retrofractum* <small>Vahl</small>
* *Piper retropilosum* <small>C.DC.</small>
* *Piper reventazonis* <small>Trel.</small>
* *Piper rhinostachyum* <small>Trel.</small>
* *Piper rhizocaule* <small>Trel.</small>
* *Piper rhodocarpum* <small>Trel.</small>
* *Piper rhododendrifolium* <small>(Kunth) Kunth ex Steud.</small>
* *Piper ribesioides* <small>Wall.</small>
* *Piper richardiifolium* <small>(Kunth) Kunth ex Steud.</small>
* *Piper ridleyi* <small>C.DC.</small>
* *Piper rigidomucronatum* <small>Callejas</small>
* *Piper riitosense* <small>Trel. & Yunck.</small>
* *Piper rinconense* <small>Trel.</small>
* *Piper rindjanense* <small>C.DC.</small>
* *Piper rindu* <small>C.DC.</small>
* *Piper riocajambrense* <small>Trel. & Yunck.</small>
* *Piper riocauchosanum* <small>Yunck.</small>
* *Piper riochiadoense* <small>Trel. & Yunck.</small>
* *Piper riodocense* <small>E.F.Guim. & Carv.-Silva</small>
* *Piper rioense* <small>Yunck.</small>
* *Piper riojanum* <small>Trel.</small>
* *Piper riomarguanum* <small>Trel. & Yunck.</small>
* *Piper rionechianum* <small>Yunck.</small>
* *Piper riozulianum* <small>Trel. & Yunck.</small>
* *Piper riparense* <small>C.DC.</small>
* *Piper ripicola* <small>C.DC.</small>
* *Piper rivi-vetusti* <small>Trel.</small>
* *Piper rivinoides* <small>(Kunth) Kunth ex Steud.</small>
* *Piper roblalense* <small>Yunck.</small>
* *Piper robleanum* <small>Trel. & Yunck.</small>
* *Piper robustipedunculum* <small>Yunck.</small>
* *Piper roemeri* <small>C.DC.</small>
* *Piper rogaguanum* <small>Trel.</small>
* *Piper ronaldii* <small>Steyerm.</small>
* *Piper roqueanum* <small>Trel.</small>
* *Piper rosei* <small>C.DC.</small>
* *Piper roseiflorum* <small>Callejas</small>
* *Piper roseovenulosum* <small>Trel.</small>
* *Piper rostratum* <small>Roxb.</small>
* *Piper rothschuhii* <small>C.DC.</small>
* *Piper rotundibaccum* <small>Trel.</small>
* *Piper rovirosae* <small>C.DC.</small>
* *Piper rubiginosum* <small>Trel.</small>
* *Piper rubramentum* <small>C.DC.</small>
* *Piper rubribaccum* <small>Trel.</small>
* *Piper rubripes* <small>Trel.</small>
* *Piper rubrospadix* <small>Trel.</small>
* *Piper rubrovenosum* <small>Rodigas</small>
* *Piper rubrum* <small>C.DC.</small>
* *Piper rude* <small>Kunth</small>
* *Piper rudgeanum* <small>(Miq.) C.DC.</small>
* *Piper rueckeri* <small>K.Schum.</small>
* *Piper rufescentibaccum* <small>C.DC.</small>
* *Piper rufibracteum* <small>C.DC.</small>
* *Piper rufinerve* <small>Opiz</small>
* *Piper rufipilum* <small>Yunck.</small>
* *Piper rufispicum* <small>C.DC.</small>
* *Piper rufum* <small>C.DC.</small>
* *Piper rugosibaccum* <small>Trel.</small>
* *Piper rugosifolium* <small>Trel.</small>
* *Piper rugosilimbum* <small>Trel.</small>
* *Piper rugosum* <small>Lam.</small>
* *Piper rukshagandhum* <small>J.Mathew</small>
* *Piper rumicifolium* <small>(Miq.) C.DC.</small>
* *Piper rumphii* <small>(Miq.) C.DC.</small>
* *Piper rupicola* <small>C.DC.</small>
* *Piper rupununianum* <small>Trel. & Yunck.</small>
* *Piper rusbyi* <small>C.DC.</small>
* *Piper rusticum* <small>Trel. & Yunck.</small>

== S ==

* *Piper sabaletasanum* <small>Trel. & Yunck.</small>
* *Piper sabanaense* <small>Yunck.</small>
* *Piper sacchamatesense* <small>Yunck.</small>
* *Piper sagittifer* <small>Trel.</small>
* *Piper sagittifolium* <small>C.DC.</small>
* *Piper saldanhae* <small>Yunck.</small>
* *Piper salentoi* <small>Trel. & Yunck.</small>
* *Piper salgaranum* <small>Trel. & Yunck.</small>
* *Piper salicariifolium* <small>(Kunth) Kunth ex Steud.</small>
* *Piper salicifolium* <small>Vahl</small>
* *Piper salicinum* <small>Opiz</small>
* *Piper salicoides* <small>Yunck.</small>
* *Piper saloyanum* <small>Trel. & Yunck.</small>
* *Piper samanense* <small>Urb.</small>
* *Piper sambuanum* <small>C.DC.</small>
* *Piper sampaioi* <small>Yunck.</small>
* *Piper san-andresense* <small>Trel. & Yunck.</small>
* *Piper san-juananum* <small>Trel.</small>
* *Piper san-marcosanum* <small>C.DC.</small>
* *Piper san-martinense* <small>Trel. & Yunck.</small>
* *Piper san-miguelense* <small>Trel. & Yunck.</small>
* *Piper san-nicolasense* <small>Trel.</small>
* *Piper san-ramonense* <small>Trel.</small>
* *Piper san-roqueanum* <small>Trel.</small>
* *Piper san-vicentense* <small>Trel. & Yunck.</small>
* *Piper sancti-felicis* <small>Trel.</small>
* *Piper sandemanii* <small>Yunck.</small>
* *Piper sandianum* <small>C.DC.</small>
* *Piper sangorianum* <small>C.DC.</small>
* *Piper sanjuanilloense* <small>Callejas</small>
* *Piper santa-ritanum* <small>Trel.</small>
* *Piper santa-rosanum* <small>C.DC.</small>
* *Piper santae-clarae* <small>Standl. & Steyerm.</small>
* *Piper sapitense* <small>C.DC.</small>
* *Piper sapotoanum* <small>Trel.</small>
* *Piper sapotoyacuense* <small>Trel.</small>
* *Piper sararense* <small>Trel. & Yunck.</small>
* *Piper sarasinorum* <small>C.DC.</small>
* *Piper sarawakanum* <small>C.DC.</small>
* *Piper sarculatum* <small>(Trel.) Callejas</small>
* *Piper sarmentosum* <small>Roxb.</small>
* *Piper satisfactum* <small>Trel.</small>
* *Piper savagii* <small>C.DC.</small>
* *Piper savanense* <small>C.DC.</small>
* *Piper scabiosifolium* <small>Trel.</small>
* *Piper scabrellum* <small>Yunck.</small>
* *Piper scabridulicaule* <small>Trel.</small>
* *Piper scabridulilimbum* <small>Trel. & Yunck.</small>
* *Piper scabrifolium* <small>Hook. & Arn.</small>
* *Piper scabrilimbum* <small>C.DC. ex A.Schroed.</small>
* *Piper scabriseptum* <small>Trel.</small>
* *Piper scabriusculum* <small>A.Dietr.</small>
* *Piper scalariforme* <small>Trel.</small>
* *Piper scalarispicum* <small>Trel.</small>
* *Piper scalpens* <small>Trel.</small>
* *Piper scandenticaule* <small>Yunck.</small>
* *Piper scansum* <small>Trel. & Yunck.</small>
* *Piper schenckii* <small>C.DC.</small>
* *Piper schiedeanum* <small>Steud.</small>
* *Piper schippianum* <small>Trel. & Standl.</small>
* *Piper schizonephros* <small>C.DC.</small>
* *Piper schlechtendalianum* <small>C.DC.</small>
* *Piper schlechtendalii* <small>Steud.</small>
* *Piper schlechteri* <small>C.DC.</small>
* *Piper schlimii* <small>C.DC.</small>
* *Piper schmidtii* <small>Hook.f.</small>
* *Piper schottii* <small>(Miq.) C.DC.</small>
* *Piper schumannii* <small>C.DC.</small>
* *Piper schunkeanum* <small>Trel.</small>
* *Piper schuppii* <small>A.H.Gentry</small>
* *Piper schwackei* <small>C.DC.</small>
* *Piper sciaphilum* <small>C.DC.</small>
* *Piper scintillans* <small>Trel.</small>
* *Piper scleromyelum* <small>C.DC.</small>
* *Piper sclerophloeum* <small>C.DC.</small>
* *Piper scobinifolium* <small>Yunck.</small>
* *Piper scortechinii* <small>C.DC.</small>
* *Piper scutifolium* <small>Yunck.</small>
* *Piper scutilimbum* <small>C.DC.</small>
* *Piper scutispicum* <small>Trel.</small>
* *Piper sebastianum* <small>Yunck.</small>
* *Piper secundum* <small>Ruiz & Pav.</small>
* *Piper seducentifolium* <small>Trel.</small>
* *Piper selangorense* <small>C.DC.</small>
* *Piper semangkoanum* <small>C.DC.</small>
* *Piper semicordulatum* <small>Trel.</small>
* *Piper semicrudum* <small>Trel.</small>
* *Piper semiimmersum* <small>C.DC.</small>
* *Piper semimetrale* <small>C.DC.</small>
* *Piper seminervosum* <small>Trel. & Yunck.</small>
* *Piper seminitidulum* <small>Trel.</small>
* *Piper semiplenum* <small>Trel.</small>
* *Piper semitarium* <small>Trel. & Yunck.</small>
* *Piper semitransparens* <small>C.Y.Hao & Y.H.Tan</small>
* *Piper semivolubile* <small>C.DC.</small>
* *Piper semperflorens* <small>C.DC.</small>
* *Piper senporeiense* <small>Yamamoto</small>
* *Piper sepicola* <small>C.DC.</small>
* *Piper sepium* <small>C.DC.</small>
* *Piper septuplinervium* <small>(Miq.) C.DC.</small>
* *Piper sericeonervosum* <small>Trel.</small>
* *Piper serotinum* <small>Trel.</small>
* *Piper serpavillanum* <small>Trel.</small>
* *Piper serrulatum* <small>Yunck.</small>
* *Piper setebarraense* <small>E.F.Guim. & L.H.P.Costa</small>
* *Piper setigerum* <small>Trel.</small>
* *Piper setosum* <small>Trel. & Yunck.</small>
* *Piper setulosum* <small>Trel.</small>
* *Piper sibulanum* <small>C.DC.</small>
* *Piper sibunense* <small>Trel.</small>
* *Piper sierra-aroense* <small>Steyerm.</small>
* *Piper signatum* <small>Trel.</small>
* *Piper siguatepequense* <small>Trel.</small>
* *Piper silentvalleyense* <small>Ravindran, M.K.Nair & Asokan Nair</small>
* *Piper silvaense* <small>Yunck.</small>
* *Piper silvanorum* <small>Trel.</small>
* *Piper silvarum* <small>C.DC.</small>
* *Piper silvicola* <small>C.DC.</small>
* *Piper silvigaudens* <small>Yunck.</small>
* *Piper silvimontanum* <small>C.DC.</small>
* *Piper silvivagum* <small>C.DC.</small>
* *Piper simile* <small>Quisumb.</small>
* *Piper simulans* <small>Trel.</small>
* *Piper simularoideum* <small>Callejas</small>
* *Piper simulhabitans* <small>Trel.</small>
* *Piper sintenense* <small>Hatus.</small>
* *Piper sinuatifolium* <small>Trel.</small>
* *Piper sinuatispicum* <small>Trel.</small>
* *Piper sinuclausum* <small>Trel.</small>
* *Piper sinugaudens* <small>C.DC.</small>
* *Piper siquirresense* <small>Trel.</small>
* *Piper sirenasense* <small>Callejas</small>
* *Piper sivarajanii* <small>Karthik. & V.S.Kumar</small>
* *Piper skutchii* <small>Trel. & Yunck.</small>
* *Piper smitinandianum* <small>Suwanph. & Chantar.</small>
* *Piper sneidernii* <small>Yunck.</small>
* *Piper snethlagei* <small>Yunck.</small>
* *Piper sociorum* <small>Trel. & Yunck.</small>
* *Piper sodiroi* <small>C.DC.</small>
* *Piper sogerense* <small>S.Moore</small>
* *Piper sogerianum* <small>C.DC.</small>
* *Piper soledadense* <small>Trel.</small>
* *Piper solmsianum* <small>C.DC.</small>
* *Piper solutidrupum* <small>Yunck.</small>
* *Piper sonadense* <small>C.DC.</small>
* *Piper sonsonatense* <small>Standl. & S.Calderon</small>
* *Piper sororium* <small>(Miq.) C.DC.</small>
* *Piper sorsogonum* <small>C.DC.</small>
* *Piper sotae* <small>Yunck.</small>
* *Piper sotobosquense* <small>S.M.Niño & Dorr</small>
* *Piper spathelliferum* <small>Quisumb.</small>
* *Piper speratum* <small>Trel.</small>
* *Piper sperdinum* <small>C.DC.</small>
* *Piper sphaerocarpum* <small>(Griseb.) C.DC. ex C.Wright</small>
* *Piper sphaeroides* <small>C.DC.</small>
* *Piper spicilongum* <small>Trel.</small>
* *Piper spinacifolium* <small>Callejas</small>
* *Piper sprengelianum* <small>C.DC.</small>
* *Piper spruceanum* <small>C.DC.</small>
* *Piper squalipelliculum* <small>Trel.</small>
* *Piper squamuliferum* <small>C.DC.</small>
* *Piper squamulosum* <small>C.DC.</small>
* *Piper staminodiferum* <small>C.DC.</small>
* *Piper standleyi* <small>Trel.</small>
* *Piper statarium* <small>Trel. & Yunck.</small>
* *Piper steinbachii* <small>Yunck.</small>
* *Piper stellipilum* <small>(Miq.) C.DC.</small>
* *Piper stenocarpum* <small>C.DC.</small>
* *Piper stenocladophorum* <small>Trel.</small>
* *Piper stenocladum* <small>C.DC.</small>
* *Piper stenopodum* <small>C.DC.</small>
* *Piper stenostachys* <small>C.DC.</small>
* *Piper sternii* <small>Yunck.</small>
* *Piper stevensii* <small>Trel.</small>
* *Piper steyermarkii* <small>Yunck.</small>
* *Piper stileferum* <small>Yunck.</small>
* *Piper stillans* <small>Trel. & Standl.</small>
* *Piper stipitiforme* <small>C.C.Chang ex Y.C.Tseng</small>
* *Piper stipulaceum* <small>Opiz</small>
* *Piper stipulare* <small>A.C.Sm.</small>
* *Piper stipulosum* <small>Sodiro</small>
* *Piper stomachicum* <small>C.DC.</small>
* *Piper storkii* <small>Trel.</small>
* *Piper striaticaule* <small>Yunck.</small>
* *Piper striatifolium* <small>Yunck.</small>
* *Piper striatipetiolum* <small>Yunck.</small>
* *Piper strictifolium* <small>D.Monteiro & E.F.Guim.</small>
* *Piper strigillosicaule* <small>Trel.</small>
* *Piper strigillosum* <small>Trel.</small>
* *Piper strigosum* <small>Trel.</small>
* *Piper stuebelii* <small>Trel.</small>
* *Piper subaduncum* <small>Yunck.</small>
* *Piper subaequilaterum* <small>Trel.</small>
* *Piper subalbicans* <small>C.DC.</small>
* *Piper subalpinum* <small>Yunck.</small>
* *Piper subampollosum* <small>Callejas</small>
* *Piper subandinum* <small>C.DC.</small>
* *Piper subasperatum* <small>Trel.</small>
* *Piper subaspericaule* <small>C.DC.</small>
* *Piper subasperifolium* <small>Yunck.</small>
* *Piper subbullatum* <small>K.Schum. & Lauterb.</small>
* *Piper subcaniramum* <small>C.DC.</small>
* *Piper subcaudatum* <small>Trel.</small>
* *Piper subcinereum* <small>C.DC.</small>
* *Piper subconcinnum* <small>C.DC.</small>
* *Piper subcordatum* <small>(Miq.) C.DC.</small>
* *Piper subcordulatum* <small>Trel.</small>
* *Piper subcrenulatum* <small>C.DC.</small>
* *Piper subdilatatum* <small>Trel.</small>
* *Piper subdivaricatum* <small>Trel.</small>
* *Piper subduidaense* <small>Yunck.</small>
* *Piper subeburneum* <small>Trel. & Standl.</small>
* *Piper subepunctatum* <small>C.DC.</small>
* *Piper suberythrocarpum* <small>C.DC.</small>
* *Piper subexiguicaule* <small>Callejas</small>
* *Piper subfalcatum* <small>Yunck.</small>
* *Piper subflavicans* <small>Trel.</small>
* *Piper subflavispicum* <small>C.DC.</small>
* *Piper subflavum* <small>C.DC.</small>
* *Piper subfragile* <small>C.DC.</small>
* *Piper subfrutescens* <small>Trel. & Yunck.</small>
* *Piper subfuscum* <small>C.DC.</small>
* *Piper subgibbosum* <small>Callejas</small>
* *Piper subglabribracteatum* <small>C.DC.</small>
* *Piper subglabrifolium* <small>C.DC.</small>
* *Piper subglabrilimbum* <small>(Yunck.) Callejas</small>
* *Piper subglabrum* <small>C.DC.</small>
* *Piper subhirsutum* <small>Trel.</small>
* *Piper sublaevifolium* <small>Trel.</small>
* *Piper sublepidotum* <small>Yunck.</small>
* *Piper sublignosum* <small>Yunck.</small>
* *Piper sublineatum* <small>Kuntze</small>
* *Piper submolle* <small>Trel.</small>
* *Piper submultinerve* <small>C.DC.</small>
* *Piper subnitidifolium* <small>Yunck.</small>
* *Piper subnitidum* <small>C.DC.</small>
* *Piper subnudibracteum* <small>C.DC.</small>
* *Piper subnudispicum* <small>Trel.</small>
* *Piper subpatens* <small>Trel.</small>
* *Piper subpedale* <small>Trel. & Yunck.</small>
* *Piper subpenninerve* <small>Ridl.</small>
* *Piper subprostratum* <small>C.DC.</small>
* *Piper subpubibracteum* <small>C.DC.</small>
* *Piper subquadratum* <small>Trel.</small>
* *Piper subquinquenerve* <small>Trel.</small>
* *Piper subrepens* <small>Trel.</small>
* *Piper subrubrispicum* <small>C.DC.</small>
* *Piper subrugosum* <small>Yunck.</small>
* *Piper subscutatum* <small>C.DC.</small>
* *Piper subseptemnervium* <small>(Miq.) C.DC.</small>
* *Piper subsericeum* <small>Trel.</small>
* *Piper subsessilifolium* <small>C.DC.</small>
* *Piper subsessililimbum* <small>C.DC.</small>
* *Piper subsilvestre* <small>C.DC.</small>
* *Piper subsilvulanum* <small>C.DC.</small>
* *Piper substenocarpum* <small>C.DC.</small>
* *Piper substilosum* <small>Yunck.</small>
* *Piper subtomentosum* <small>Trel. & Yunck.</small>
* *Piper subtrinerve* <small>Trel.</small>
* *Piper subulatum* <small>C.DC.</small>
* *Piper subvariabile* <small>Trel.</small>
* *Piper subzhorquinense* <small>C.DC. ex Trel.</small>
* *Piper sucreense* <small>Trel. & Yunck.</small>
* *Piper suffrutescens* <small>C.DC.</small>
* *Piper suffruticosum* <small>Trel.</small>
* *Piper sugandhi* <small>Ravindran, K.N.Babu & V.G.Naik</small>
* *Piper suipigua* <small>Buch.-Ham. ex D.Don</small>
* *Piper sulcatum* <small>Blume</small>
* *Piper sulcinervosum* <small>Trel.</small>
* *Piper sumpi* <small>Trel.</small>
* *Piper sundaicum* <small>Blume</small>
* *Piper supernum* <small>Trel. & Yunck.</small>
* *Piper suratanum* <small>Trel. & Yunck.</small>
* *Piper surubresanum* <small>Trel.</small>
* *Piper svenningii* <small>W.Trujillo-C. & Balslev</small>
* *Piper swartzianum* <small>(Miq.) C.DC.</small>
* *Piper sylvaticum* <small>Roxb.</small>
* *Piper sylvestre* <small>Lour.</small>
* *Piper syringifolium* <small>Vahl</small>

== T ==

* *Piper tabanicidum* <small>Trel.</small>
* *Piper tabernillanum* <small>Trel.</small>
* *Piper tabinense* <small>Trel.</small>
* *Piper taboganum* <small>C.DC.</small>
* *Piper tacanaense* <small>Callejas</small>
* *Piper tacananum* <small>Trel. & Standl.</small>
* *Piper tacarcunense* <small>Callejas</small>
* *Piper tacariguense* <small>Steyerm.</small>
* *Piper tachiranum* <small>Yunck.</small>
* *Piper tacticanum* <small>Trel. & Standl.</small>
* *Piper taiwanense* <small>T.T.Lin & S.Y.Lu</small>
* *Piper tajumulcoanum* <small>Trel. & Standl.</small>
* *Piper talbotii* <small>C.DC.</small>
* *Piper tamayoanum* <small>Steyerm.</small>
* *Piper tapantiense* <small>Trel.</small>
* *Piper taperanum* <small>Yunck.</small>
* *Piper taperinhanum* <small>Yunck.</small>
* *Piper tapianum* <small>Trel.</small>
* *Piper tarcolense* <small>Callejas</small>
* *Piper tardans* <small>Trel.</small>
* *Piper tectoniifolium* <small>(Kunth) Kunth ex Steud.</small>
* *Piper tecumense* <small>Trel.</small>
* *Piper tecutlanum* <small>Trel. & Standl.</small>
* *Piper telanum* <small>Trel.</small>
* *Piper telembi* <small>E.García</small>
* *Piper temiscoense* <small>Trel. ex Callejas</small>
* *Piper temptum* <small>Trel.</small>
* *Piper tenebricosum* <small>Trel.</small>
* *Piper tentatum* <small>Trel.</small>
* *Piper tenue* <small>Kunth</small>
* *Piper tenuibracteum* <small>C.DC.</small>
* *Piper tenuiculispicum* <small>Trel.</small>
* *Piper tenuicuspe* <small>(Miq.) C.DC.</small>
* *Piper tenuifolium* <small>C.DC.</small>
* *Piper tenuilimbum* <small>C.DC.</small>
* *Piper tenuimucronatum* <small>C.DC.</small>
* *Piper tenuinerve* <small>C.DC.</small>
* *Piper tenuipes* <small>C.DC.</small>
* *Piper tenuispicum* <small>C.DC.</small>
* *Piper tepicanum* <small>C.DC.</small>
* *Piper tepuiense* <small>Steyerm.</small>
* *Piper tequendanense* <small>C.DC.</small>
* *Piper terrabanum* <small>C.DC.</small>
* *Piper terryae* <small>Standl.</small>
* *Piper tesserispicum* <small>Trel.</small>
* *Piper tessmannii* <small>Trel.</small>
* *Piper teysmannii* <small>(Miq.) C.DC.</small>
* *Piper theobromifolium* <small>O.Schwartz</small>
* *Piper thermale* <small>Vahl</small>
* *Piper thomsonii* <small>(C.DC.) Hook.f.</small>
* *Piper thorelii* <small>C.DC.</small>
* *Piper tiguanum* <small>C.DC.</small>
* *Piper tilaranum* <small>Trel.</small>
* *Piper timbiquinum* <small>C.DC.</small>
* *Piper timbuchianum* <small>Trel.</small>
* *Piper timothianum* <small>A.C.Sm.</small>
* *Piper tinctum* <small>Trel.</small>
* *Piper tjambae* <small>C.DC.</small>
* *Piper tocacheanum* <small>C.DC.</small>
* *Piper tomas-albertoi* <small>Trel. & Yunck.</small>
* *Piper tomentosum* <small>Mill.</small>
* *Piper tomohonum* <small>C.DC.</small>
* *Piper tonduzii* <small>C.DC.</small>
* *Piper toppingii* <small>C.DC.</small>
* *Piper toronotepuiense* <small>Steyerm.</small>
* *Piper torresanum* <small>Trel.</small>
* *Piper torricellense* <small>Lauterb.</small>
* *Piper tortivenulosum* <small>Yunck.</small>
* *Piper tortuosipilum* <small>Trel.</small>
* *Piper tortuosivenosum* <small>Trel.</small>
* *Piper tovarense* <small>Trel. & Yunck.</small>
* *Piper townsendii* <small>C.DC.</small>
* *Piper trachydermum* <small>Trel.</small>
* *Piper trachyphyllum* <small>C.DC.</small>
* *Piper translucens* <small>Yunck.</small>
* *Piper transpontinum* <small>Trel.</small>
* *Piper travancorianum* <small>P.K.Mukh.</small>
* *Piper trianae* <small>C.DC.</small>
* *Piper triangulare* <small>Chew ex P.Royen</small>
* *Piper trichocarpon* <small>C.DC.</small>
* *Piper trichogynum* <small>C.DC.</small>
* *Piper trichoneuron* <small>(Miq.) C.DC.</small>
* *Piper trichophlebium* <small>Trel.</small>
* *Piper trichophyllum* <small>C.DC.</small>
* *Piper trichopus* <small>Trel.</small>
* *Piper trichorhachis* <small>C.DC.</small>
* *Piper trichostachyon* <small>(Miq.) C.DC.</small>
* *Piper trichostylopse* <small>Trel.</small>
* *Piper trichostylum* <small>C.DC.</small>
* *Piper tricolor* <small>Y.C.Tseng</small>
* *Piper tricuspe* <small>(Miq.) C.DC.</small>
* *Piper tridentipilum* <small>C.DC.</small>
* *Piper trigoniastrifolium* <small>C.DC.</small>
* *Piper trigonocarpum* <small>Trel.</small>
* *Piper trigonodrupum* <small>Yunck.</small>
* *Piper trigonum* <small>C.DC.</small>
* *Piper trinervium* <small>(Miq.) C.DC.</small>
* *Piper trineuron* <small>Miq.</small>
* *Piper triquetrofructum* <small>Trel.</small>
* *Piper tristemon* <small>C.DC.</small>
* *Piper tristigmum* <small>Trel.</small>
* *Piper truman-yunckeri* <small>Callejas</small>
* *Piper truncatibaccum* <small>C.DC.</small>
* *Piper truncatum* <small>Vell.</small>
* *Piper tsakianum* <small>C.DC.</small>
* *Piper tsangyuanense* <small>P.S.Chen & P.C.Zhu</small>
* *Piper tsarasotrae* <small>Papini, Palchetti, M.Gori & Rota Nodari</small>
* *Piper tsengianum* <small>M.G.Gilbert & N.H.Xia</small>
* *Piper tsuritkubense* <small>Trel.</small>
* *Piper tuberculatum* <small>Jacq.</small>
* *Piper tucumanum* <small>C.DC.</small>
* *Piper tuerckheimii* <small>C.DC.</small>
* *Piper tuisanum* <small>C.DC.</small>
* *Piper tumidinodum* <small>Yunck.</small>
* *Piper tumidipedunculum* <small>Trel.</small>
* *Piper tumidonodosum* <small>P.K.Mukh.</small>
* *Piper tumidum* <small>Kunth</small>
* *Piper tumupasense* <small>Yunck.</small>
* *Piper tungurahuae* <small>Sodiro</small>
* *Piper tuquesanum* <small>Callejas</small>
* *Piper turbense* <small>Trel.</small>
* *Piper turrialvanum* <small>C.DC.</small>
* *Piper tutuilae* <small>C.DC.</small>
* *Piper tuxtepecense* <small>Trel. ex Callejas</small>
* *Piper tuxtlense* <small>Callejas</small>

== U ==

* *Piper uaupesense* <small>Yunck.</small>
* *Piper ubiqueasperum* <small>Trel.</small>
* *Piper ubiquescabridum* <small>Trel.</small>
* *Piper ucayalianum* <small>Trel.</small>
* *Piper udicola* <small>C.DC.</small>
* *Piper udimontanum* <small>C.DC.</small>
* *Piper uhdei* <small>C.DC.</small>
* *Piper ulceratum* <small>Trel.</small>
* *Piper uleanum* <small>Trel.</small>
* *Piper ulei* <small>C.DC.</small>
* *Piper ulvifolium* <small>K.Schum. & Lauterb.</small>
* *Piper umbellatum* <small>L.</small>
* *Piper umbricola* <small>C.DC.</small>
* *Piper umbriculum* <small>(Cuatrec.) M.A.Jaram. & Callejas</small>
* *Piper umbriense* <small>Trel. & Yunck.</small>
* *Piper umbrosum* <small>Kunth</small>
* *Piper uncinulatum* <small>Ridl.</small>
* *Piper ungaramense* <small>C.DC.</small>
* *Piper unguiculatum* <small>Ruiz & Pav.</small>
* *Piper unguiculiferum* <small>Trel.</small>
* *Piper unillanum* <small>Trel. & Yunck.</small>
* *Piper upalaense* <small>Callejas</small>
* *Piper urdanetanum* <small>C.DC.</small>
* *Piper urense* <small>Callejas</small>
* *Piper urophyllum* <small>C.DC.</small>
* *Piper urostachyum* <small>Hemsl.</small>
* *Piper urubambanum* <small>Trel.</small>
* *Piper uspantanense* <small>C.DC.</small>
* *Piper usumacintense* <small>Lundell</small>
* *Piper utinganum* <small>Yunck.</small>
* *Piper uvitanum* <small>C.DC.</small>

== V ==

* *Piper vaccinum* <small>Standl. & Steyerm.</small>
* *Piper vaginans* <small>C.DC.</small>
* *Piper valdivianum* <small>Callejas</small>
* *Piper valetudinarii* <small>Trel.</small>
* *Piper valladolidense* <small>Yunck.</small>
* *Piper vallicola* <small>C.DC.</small>
* *Piper vanderveldeanum* <small>Trel.</small>
* *Piper varablancanum* <small>Trel.</small>
* *Piper variabile* <small>C.DC.</small>
* *Piper varibracteum* <small>C.DC.</small>
* *Piper variifolium* <small>(Miq.) C.DC.</small>
* *Piper variipilum* <small>C.DC.</small>
* *Piper variitrichum* <small>Yunck.</small>
* *Piper vellosoi* <small>Yunck.</small>
* *Piper velutinervium* <small>C.DC.</small>
* *Piper velutinibaccum* <small>C.DC.</small>
* *Piper velutininervosum* <small>Trel.</small>
* *Piper velutinobracteosum* <small>Callejas</small>
* *Piper velutinovarium* <small>C.DC.</small>
* *Piper velutinum* <small>Kunth</small>
* *Piper venamoense* <small>Steyerm.</small>
* *Piper veneralense* <small>Trel. & Yunck.</small>
* *Piper venosum* <small>(Miq.) C.DC.</small>
* *Piper ventoleranum* <small>Trel.</small>
* *Piper venulosissimum* <small>Yunck.</small>
* *Piper veraguanum* <small>Callejas</small>
* *Piper veraguense* <small>C.DC.</small>
* *Piper verbascifolium* <small>(Miq.) C.DC.</small>
* *Piper verbenanum* <small>C.DC.</small>
* *Piper veredianum* <small>Trel.</small>
* *Piper vergelense* <small>Trel. & Standl.</small>
* *Piper vermiculatum* <small>C.DC.</small>
* *Piper verruculicaule* <small>Trel.</small>
* *Piper verruculifolium* <small>Trel.</small>
* *Piper verruculigerum* <small>Trel.</small>
* *Piper verruculipetiolum* <small>Trel.</small>
* *Piper verruculosum* <small>C.DC.</small>
* *Piper versteegii* <small>C.DC.</small>
* *Piper vestitifolium* <small>C.DC.</small>
* *Piper vestitum* <small>C.DC.</small>
* *Piper vexans* <small>Trel.</small>
* *Piper via-chicoense* <small>Yunck.</small>
* *Piper viae-marginis* <small>Trel.</small>
* *Piper vicinum* <small>Trel.</small>
* *Piper vicosanum* <small>Yunck.</small>
* *Piper victorianum* <small>C.DC.</small>
* *Piper villalobosense* <small>Yunck.</small>
* *Piper villarrealii* <small>Yunck.</small>
* *Piper villipedunculum* <small>C.DC.</small>
* *Piper villirameum* <small>C.DC.</small>
* *Piper villiramulum* <small>C.DC.</small>
* *Piper villistipulum* <small>Trel.</small>
* *Piper villosispicum* <small>Trel.</small>
* *Piper villosissimum* <small>Yunck.</small>
* *Piper villosum* <small>C.DC.</small>
* *Piper viminifolium* <small>Trel.</small>
* *Piper virgatum* <small>Yunck.</small>
* *Piper virgenense* <small>Trel. & Yunck.</small>
* *Piper virginicum* <small>Trel. & Standl.</small>
* *Piper virgultorum* <small>C.DC.</small>
* *Piper viridescens* <small>Suwanph. & Chantar.</small>
* *Piper viridicaule* <small>Trel.</small>
* *Piper viridifolium* <small>Trel.</small>
* *Piper viridilimbum* <small>Trel.</small>
* *Piper viridistachyum* <small>Yunck.</small>
* *Piper virillanum* <small>C.DC.</small>
* *Piper viscaianum* <small>Trel. & Yunck.</small>
* *Piper vitabile* <small>Trel.</small>
* *Piper vitaceum* <small>Yunck.</small>
* *Piper viticaule* <small>Yunck.</small>
* *Piper vitiense* <small>A.C.Sm.</small>
* *Piper voigtii* <small>C.DC.</small>
* *Piper volubile* <small>C.DC.</small>

== W ==

* *Piper wabagense* <small>W.L.Chew</small>
* *Piper wachenheimii* <small>Trel.</small>
* *Piper wagneri* <small>C.DC.</small>
* *Piper walkeri* <small>Miq.</small>
* *Piper wallichii* <small>(Miq.) Hand.-Mazz.</small>
* *Piper wangii* <small>M.G.Gilbert & N.H.Xia</small>
* *Piper weddellii* <small>C.DC.</small>
* *Piper wedelii* <small>Yunck.</small>
* *Piper wibomii* <small>Yunck.</small>
* *Piper wichmannii* <small>C.DC.</small>
* *Piper wightii* <small>Miq.</small>
* *Piper wilhelmense* <small>Chew ex P.Royen</small>
* *Piper wilsonii* <small>Trel.</small>
* *Piper wingfieldii* <small>Steyerm.</small>
* *Piper winkleri* <small>C.DC.</small>
* *Piper woytkowskii* <small>Yunck.</small>
* *Piper wrightii* <small>C.DC.</small>

== X ==

* *Piper xanthocarpum* <small>C.DC.</small>
* *Piper xanthoneurum* <small>Trel.</small>
* *Piper xanthostachyum* <small>C.DC.</small>
* *Piper xiroresanum* <small>C.DC.</small>
* *Piper xylosteoides* <small>(Kunth) Steud.</small>

== Y ==

* *Piper yamaranguilaense* <small>Callejas</small>
* *Piper yanaconasense* <small>Trel. & Yunck.</small>
* *Piper yananoanum* <small>Trel.</small>
* *Piper yaracuyense* <small>Yunck.</small>
* *Piper yaxhanum* <small>Trel.</small>
* *Piper yessupianum* <small>Trel.</small>
* *Piper yinkiangense* <small>Y.C.Tseng</small>
* *Piper yoroanum* <small>Trel.</small>
* *Piper yousei* <small>Trel.</small>
* *Piper yucatanense* <small>C.DC.</small>
* *Piper yui* <small>M.G.Gilbert & N.H.Xia</small>
* *Piper yungasanum* <small>Yunck.</small>
* *Piper yunnanense* <small>Y.C.Tseng</small>
* *Piper yzabalanum* <small>C.DC.</small>

== Z ==

* *Piper zacapanum* <small>Trel. & Standl.</small>
* *Piper zacatense* <small>C.DC.</small>
* *Piper zarceroense* <small>Trel.</small>
* *Piper zarumanum* <small>Trel.</small>
* *Piper zentanum* <small>C.DC.</small>
* *Piper zeylanicum* <small>Miq.</small>
* *Piper zhorquinense* <small>C.DC.</small>
* *Piper zollingeri* <small>C.DC.</small>
* *Piper zonulatispicum'' Trel.