紫丹屬（學名：_Tournefortia_）是紫草科下的一個屬，為喬木、灌木或藤本植物。該屬共有約 150 種，分布於熱帶和亞熱帶地區。



下屬物種

本屬包括以下物種：


* _Tournefortia acuminata_ DC.

* _Tournefortia acutiflora_ M.Martens & Galeotti

* _Tournefortia acutifolia_ Willd.

* _Tournefortia albifolia_ J.S.Mill.

* _Tournefortia andina_ Britton ex Rusby

* _Tournefortia angulosa_ Desf.

* _Tournefortia angustiflora_ Ruiz & Pav.

* _Tournefortia arborescens_ Lam.

* _Tournefortia asperrima_ M.Martens & Galeotti

* _Tournefortia astrotricha_ DC.

* _Tournefortia auroargentea_ Killip

* _Tournefortia bicolor_ Sw.

* _Tournefortia biseriata_ Killip

* _Tournefortia bojeri_ A.DC.

* _Tournefortia brantii_ J.S.Mill.

* _Tournefortia brasiliensis_ Poir.

* _Tournefortia brevilobata_ Krause

* _Tournefortia buchtienii_ Killip

* _Tournefortia caeciliana_ Loes.

* _Tournefortia calycina_ Benth.

* _Tournefortia calycosa_ (Donn.Sm.) D.L.Nash

* _Tournefortia candida_ (M.Martens & Galeotti) Walp.

* _Tournefortia canescens_ Kunth

* _Tournefortia capitata_ M.Martens & Galeotti

* _Tournefortia caracasana_ Kunth

* _Tournefortia caribaea_ (A.DC.) Griseb.

* _Tournefortia chinchensis_ Killip

* _Tournefortia chrysantha_ (M.Martens & Galeotti) Walp.

* _Tournefortia conocarpa_ Urb.

* _Tournefortia cordifolia_ André

* _Tournefortia coriacea_ Vaupel

* _Tournefortia cornifolia_ Kunth

* _Tournefortia curvilimba_ Killip

* _Tournefortia cuspidata_ Kunth

* _Tournefortia delicatula_ J.S.Mill.

* _Tournefortia dracophylla_ K.Schum. & Lauterb.

* _Tournefortia dracrophylla_ K.Schum. & Lauterb.

* _Tournefortia elongata_ D.N.Gibson

* _Tournefortia filiflora_ Griseb.

* _Tournefortia foetidissima_ L.

* _Tournefortia fruticosa_ Ortega

* _Tournefortia fuliginosa_ Kunth

* _Tournefortia gibberosa_ Urb.

* _Tournefortia gigantifolia_ Killip ex J.S.Mill.

* _Tournefortia glaberrima_ Salzm. ex A.DC.

* _Tournefortia glabra_ L.

* _Tournefortia gnaphalioides_ (L.) R.Br. ex Roem. & Schult.

* _Tournefortia gnaphalodes_ (L.) R.Br.

* _Tournefortia gracilipes_ I.M.Johnst.

* _Tournefortia gracillima_ Vaupel

* _Tournefortia hartwegii_ A.DC.

* _Tournefortia hernandesii_ Dunal ex DC.

* _Tournefortia heyneana_ Wall. ex G.Don

* _Tournefortia hispida_ Kunth

* _Tournefortia hookeri_ C.B.Clarke

* _Tournefortia hostmannii_ Klotzsch

* _Tournefortia intonsa_ Kerr

* _Tournefortia johnstonii_ Standl.

* _Tournefortia khasiana_ C.B.Clarke

* _Tournefortia killipii_ Nowicke

* _Tournefortia kirkii_ (I.M.Johnst.) J.S.Mill.

* _Tournefortia laevigata_ Lam.

* _Tournefortia lanceolata_ Sessé & Moc.

* _Tournefortia lanuginosa_ Vaupel

* _Tournefortia latisepala_ Nowicke

* _Tournefortia leptostachya_ Benth.

* _Tournefortia leucophylla_ Kunth

* _Tournefortia longifolia_ Ruiz & Pav.

* _Tournefortia longiloba_ D.N.Gibson

* _Tournefortia longipedicellata_ J.S.Mill.

* _Tournefortia longispica_ J.S.Mill.

* _Tournefortia macbridei_ Killip

* _Tournefortia macrostachya_ Rusby

* _Tournefortia megapotamica_ Spreng.

* _Tournefortia mexicana_ Vatke

* _Tournefortia meyerae_ A.DC.

* _Tournefortia microcalyx_ (Ruiz & Pav.) I.M.Johnst.

* _Tournefortia microphylla_ Desv. ex Ham.

* _Tournefortia mollis_ Bertol.

* _Tournefortia mollis_ F.Muell.

* _Tournefortia mollissima_ Killip

* 紫丹 _Tournefortia montana_ Lour.

* _Tournefortia multiflora_ J.S.Mill.

* _Tournefortia mutabilis_ Vent.

* _Tournefortia obovata_ Killip

* _Tournefortia obtusiflora_ Benth.

* _Tournefortia ovalifolia_ Rusby

* _Tournefortia ovata_ Wall.

* _Tournefortia ovata_ Wall. ex G.Don

* _Tournefortia pauciflora_ Killip ex Nowicke

* _Tournefortia pedicellata_ D.L.Nash

* _Tournefortia petiolaris_ DC.

* _Tournefortia polystachya_ Ruiz & Pav.

* _Tournefortia pseudoheliotropium_ Lehm.

* _Tournefortia puberula_ Baker

* _Tournefortia pubescens_ Hook.fil.

* _Tournefortia punctata_ Lem.

* _Tournefortia pyrrhotricha_ Fresen.

* _Tournefortia pyrrostricha_ Fresen

* _Tournefortia ramonensis_ Standl.

* _Tournefortia ramosissima_ Krause

* _Tournefortia restigicola_ Vaupel

* _Tournefortia restrepoae_ J.S.Mill.

* _Tournefortia roigii_ Britton

* _Tournefortia rollotii_ Killip

* _Tournefortia romeroi_ I.M.Johnst.

* _Tournefortia rufescens_ Willd. ex Roem. & Schult.

* _Tournefortia rufosericea_ Hook.fil.

* _Tournefortia scabra_ Lam.

* _Tournefortia scabrida_ Kunth

* _Tournefortia schiedeana_ G.Don

* _Tournefortia setacea_ Killip

* 砂引草 _Tournefortia sibirica_ L.

* _Tournefortia smaragdina_ Proctor

* _Tournefortia sogdiana_ (Bunge) Popov

* _Tournefortia speciosa_ Vaupel

* _Tournefortia spicata_ J.S.Mill.

* _Tournefortia staminea_ Griseb.

* _Tournefortia stenoloba_ Killip

* _Tournefortia stenosepala_ Krause

* _Tournefortia subspicata_ Donn.Sm.

* _Tournefortia subtropica_ (C.B.Clarke) S.P.Banerjee

* _Tournefortia tacarcunensis_ A.H.Gentry & Nowicke

* _Tournefortia tarmensis_ (K.Krause) J.F.Macbr.

* _Tournefortia tenuifolia_ Steud., 1841

* _Tournefortia ternata_ Wall.

* _Tournefortia ternifolia_ Kunth

* _Tournefortia tetragona_ D.Dietr.

* _Tournefortia umbellata_ Kunth

* _Tournefortia urceolata_ J.S.Mill.

* _Tournefortia usambarensis_ (Verdc.) Verdc.

* _Tournefortia vasquezii_ J.S.Mill.

* _Tournefortia vestita_ Killip

* _Tournefortia villosa_ Salzm. ex DC.

* _Tournefortia virgata_ Ruiz & Pav.

* _Tournefortia viridiflora_ (Roxb.) Wall.

* _Tournefortia walkerae_ C.B.Clarke

* _Tournefortia walkeri_ C.B.Clarke

* _Tournefortia wightii_ C.B.Clarke

歸入本屬的物種：


* _Argusia montana_ Steud., 1821

* _Argusia sibirica_ Linnaeus, 1753

* _Messerschmidia valga_ Miers

* _Messerschmidia vicinia_ Miers

* _Spilocarpus gracilis_ Lem.



參考文獻