# Oxypetalum

Oxypetalum is a genus of flowering plants in the family Apocynaceae, first described with this name in 1810. The genus is native to South America.
Oxypetalum coeruleum is cultivated as an ornamental.

## Species

As of November 2023, Plants of the World Online accepted the following species:
* Oxypetalum acerosum Malme – Paraguay
* Oxypetalum aequaliflorum E.Fourn. – Brazil
* Oxypetalum albicans Schltr. – Brazil
* Oxypetalum alpinum (Vell.) Fontella & E.A.Schwarz – Brazil
* Oxypetalum appendiculatum Mart. – Paraguay, Brazil
* Oxypetalum arachnoideum E.Fourn. – Rio de Janeiro
* Oxypetalum arenicola Hauman ex Lillo – Argentina
* Oxypetalum argentinum Malme – Argentina
* Oxypetalum arnottianum H.Buek – Brazil
* Oxypetalum attenuatum (Rusby) Malme – Bolivia
* Oxypetalum aurantiacum Malme ex Chodat & Hassl. – Paraguay
* Oxypetalum balansae Malme – Paraguay
* Oxypetalum banksii R.Br. ex Schult. – Bahia
* Oxypetalum barberoanum T.Mey. – Paraguay
* Oxypetalum boliviense Schltr. – Bolivia
* Oxypetalum boudetii Fontella & Goes – Brazil (Espírito Santo)
* Oxypetalum brachystemma Malme – Argentina, Bolivia
* Oxypetalum brachystephanum (Malme) Malme – Paraguay
* Oxypetalum brussae H.A.Keller & Andrés González – Uruguay
* Oxypetalum capitatum Mart. – Brazil, Bolivia, Venezuela, Guyana, Suriname
* Oxypetalum ceratostemma Malme – Paraguay
* Oxypetalum charrua T.Mey. – Brazil, Argentina, Chile
* Oxypetalum chodatianum Malme – Paraguay
* Oxypetalum coalitum E.Fourn. – Brazil
* Oxypetalum coccineum -Griseb. – Argentina
* Oxypetalum coeruleum (D.Don ex Sweet) Decne. – Argentina
* Oxypetalum commersonianum (Decne.) Fontella & E.A.Schwarz – Uruguay
* Oxypetalum confusum Malme – Rio Grande do Sul
* Oxypetalum cordifolium (Vent.) Schltr. – widespread from Cuba + San Luis Potosí south to Peru
* Oxypetalum corymbosum (Malme) Liede & Meve – eastern Bolivia to Paraguay, northeastern Argentina (Corrientes), and eastern Brazil
* Oxypetalum costae Occhioni – Rio de Janeiro
* Oxypetalum crispum Wight ex Hook. & Arn. – Bolivia, S Brazil
* Oxypetalum dactylostelma Goyder – Bolivia
* Oxypetalum deltoideum E.Fourn. – Brazil (Rio de Janeiro)
* Oxypetalum dombeyanum Decne. – Peru and Bolivia
* Oxypetalum dusenii Malme – Paraná
* Oxypetalum ekblomii Malme – Matto Grosso
* Oxypetalum erectum Mart. – Minas Gerais
* Oxypetalum erianthum Decne. – Goiás
* Oxypetalum erostre E.Fourn. – Brazil
* Oxypetalum fiebrigii (Malme) Goyder & Rapini – Bolivia, Argentina
* Oxypetalum filamentosum Malme – Paraguay
* Oxypetalum flavopurpureum Goyder & Fontella – Bolivia, Peru
* Oxypetalum foliosum Mart. – São Paulo
* Oxypetalum fontellae S.A.Cáceres – northern Argentina
* Oxypetalum fuscum Goyder & Fontella – Bolivia
* Oxypetalum glabrescens Malme – Paraguay
* Oxypetalum glaziovianum Loes. – Brazil
* Oxypetalum glaziovii (E.Fourn.) Fontella & Marquete – Brazil
* Oxypetalum globosum C.Ezcurra & C.M.Martín – Argentina (Salta)
* Oxypetalum glomeratum E.Fourn. – Brazil (Minas Gerais)
* Oxypetalum gracile T.Mey. – N Argentina
* Oxypetalum guaraniticum (Malme) Malme – Argentina
* Oxypetalum gyrophyllum Farinaccio & Mello-Silva – Rio de Janeiro, São Paulo
* Oxypetalum habrogynum Farinaccio – Parque Nacional da Serra da Canastra in Minas Gerais
* Oxypetalum harleyi (Fontella & Goyder) Farin. – NE Brazil
* Oxypetalum helios Farinaccio – Parque Nacional da Serra da Canastra in Minas Gerais
* Oxypetalum heptalobum Goyder & Rapini – Bolivia
* Oxypetalum hilarianum E.Fourn. – Rio Grande do Sul in Brazil, Misiones in Argentina
* Oxypetalum hoehnei Malme – Paraná
* Oxypetalum humile (Morong) Hassl. – Paraguay
* Oxypetalum incanum E.Fourn. – São Paulo
* Oxypetalum insigne (Decne.) Malme – São Paulo
* Oxypetalum jacobinae Decne. – Bahia
* Oxypetalum joergensenii T.Mey – Argentina
* Oxypetalum kassneri H.A.Keller & Funez – Brazil (Santa Catarina)
* Oxypetalum kleinii Fontella & Marquete – Santa Catarina
* Oxypetalum kuhlmannianum Occhioni – Minas Gerais
* Oxypetalum laciniatum Rapini & Farinaccio – Brazil (Bahia)
* Oxypetalum lanatum Decne. ex E.Fourn. – Serra dos Órgãos in Rio de Janeiro
* Oxypetalum leonii Malme – Minas Gerais
* Oxypetalum lineare Decne. – São Paulo
* Oxypetalum lividum Farinaccio – Peru
* Oxypetalum longipedunculatum (Malme) Goyder & Rapini – northwestern Argentina
* Oxypetalum lutescens E.Fourn. – Rio de Janeiro
* Oxypetalum lynchianum T.Mey. – Chaco in Argentina
* Oxypetalum macrolepis (Hook. & Arn.) Decne. – southern Brazil, Paraguay, Uruguay, and northeastern Argentina
* Oxypetalum malmei Hoehne – Paraná
* Oxypetalum marambaiense Occhioni – Brazil (Rio de Janeiro)
* Oxypetalum marchesii C.Ezcurra & A.González – Uruguay
* Oxypetalum marginatum Malme – Brazil (Mato Grosso do Sul, São Paulo, and Paraná) and Paraguay (Sierra de Maracayú)
* Oxypetalum marianae H.A.Keller & Funez – Brazil (Santa Catarina)
* Oxypetalum martii E.Fourn. – Bahia
* Oxypetalum megapotamicum Spreng. – southern Brazil, Uruguay, and northeastern Argentina
* Oxypetalum melinioides Goyder – Minas Gerais
* Oxypetalum microphyllum Hook. & Arn. – Mountains of Rio Jacquy in Brazil
* Oxypetalum minarum E.Fourn. – Brazil
* Oxypetalum molle Hook. & Arn. – Santa Catarina
* Oxypetalum montanum Mart. – Jiambe da Villa do Principe in Brazil
* Oxypetalum morilloanum Fontella – Santa Catarina
* Oxypetalum mosenii (Malme) Malme – Rio Grande do Sul
* Oxypetalum multiflorum (Malme) Malme – Brazil (Minas Gerais)
* Oxypetalum muticum E.Fourn. – Brazil
* Oxypetalum nanum Malme – Paraguay
* Oxypetalum nigricans (Decne.) Liede & Meve – Uruguay
* Oxypetalum nitidum Malme – São Paulo
* Oxypetalum obtusifolium Malme – Paraná
* Oxypetalum ophiuroideum Malme – Sierra de Maracayú in Paraguay
* Oxypetalum ostenii Malme – Argentina
* Oxypetalum pachyglossum Decne. – Bahia, São Paulo
* Oxypetalum pachygynum Decne. – Minas Gerais
* Oxypetalum pannosum Decne. – Brazil
* Oxypetalum pardense E.Fourn. – Brazil
* Oxypetalum parviflorum (Decne.) Decne. – Rio Grande do Sul
* Oxypetalum patulum E.Fourn. – Brazil
* Oxypetalum pearsonii (Rusby) Goyder & Fontella – Rurrenabaque in Bolivia
* Oxypetalum pentasetum (Rusby) Goyder & Rapini – Yungas in Bolivia
* Oxypetalum pilosum Malme – Pedra Bonita in Brazil
* Oxypetalum polyanthum (Hoehne) Rapini – Brazil
* Oxypetalum pubescens (Malme) Goyder & Rapini – northwestern Argentina
* Oxypetalum radinsii H.A.Keller – Argentina (Misiones)
* Oxypetalum rariflorum Malme – Brazil (Paraná and Rio Grande do Sul)
* Oxypetalum reflexum Malme – Sierra de Amambay in Paraguay
* Oxypetalum regnellii (Malme) Malme – Minas Gerais
* Oxypetalum reitzii Fontella and Marquete – Santa Catarina
* Oxypetalum retusum (Markgr.) Goyder – Peru
* Oxypetalum rojasianum Malme – Paraguay
* Oxypetalum rusticum Rapini – Espinhaço Range in Minas Gerais
* Oxypetalum schenkii K.Schum. – Brazil (Rio de Janeiro)
* Oxypetalum schottii Fourn. – Brazil (Rio de Janeiro)
* Oxypetalum schulzii Malme – northeastern Argentina and Uruguay
* Oxypetalum solanoides Hook. & Arn. – Buenos Aires Province in Argentina
* Oxypetalum stipatum Malme – Brazil
* Oxypetalum strictum Mart. – Brazil
* Oxypetalum subcapitatum Malme – Sierra de Maracayú in Paraguay
* Oxypetalum subhirtellum Miq. – Brazil (Minas Gerais)
* Oxypetalum sublanatum Malme – southeastern and southern Brazil and Argentina (Misiones)
* Oxypetalum suboppositum Malme – Paraguay
* Oxypetalum sylvestre (Hook. & Arn.) Goyder & Rapini – southern Brazil (Rio Grande do Sul), Paraguay, Uruguay, and northeastern Argentina
* Oxypetalum teyucuarense Farinaccio & H.A.Keller – northeastern Argentina (Misiones)
* Oxypetalum timbense H.A.Keller – southern Brazil (Santa Catarina)
* Oxypetalum tomentosum Wight ex Hook. & Arn. – Maldonado in Uruguay
* Oxypetalum tubatum Malme – Paraná
* Oxypetalum tucumanense (T.Mey.) Goyder & Rapini – Argentina (Jujuy, Tucumán)
* Oxypetalum urceolatum Farinaccio & Goyder – Bolivia
* Oxypetalum venustum H.A.Keller – northeastern Argentina (Corrientes)
* Oxypetalum warmingii (E.Fourn.) Fontella & Marquete – Brazil
* Oxypetalum weberbaueri Schltr. – Peru
* Oxypetalum wightianum Hook. & Arn. – Brazil

### formerly included

moved to other genera (Cynanchum, Morrenia, Philibertia, Tassadia, Tweedia)
* O. andinum now Tweedia andina
* O. angustifolium now Tweedia birostrata
* O. berteroanum now Tassadia berteroanum
* O. brevipes now Tweedia birostrata
* O. brunonis now Tweedia brunonis
* O. echegarayi now Tweedia echegarayi
* O. kingii now Tweedia echegarayi
* O. niveum now Philibertia nivea
* O. rusbyi now Cynanchum rusbyi
* O. scalae now Morrenia scalae
* O. variegatum now Morrenia variegata