''Acianthera'' is a genus of orchids native to the tropical parts of the Western Hemisphere,Kew World Checklist of Selected Plant Families
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Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

.de Melo, M. C., Borba, E. L., & Paiva, E. A. S. (2010)
Morphological and histological characterization of the osmophores and nectaries of four species of ''Acianthera'' (Orchidaceae: Pleurothallidinae).
''Plant Systematics and Evolution'' 286(3-4), 141-51. It was first described in 1842 but was not widely recognized until recently. Most of the species were formerly placed under ''

Pleurothallis ''Pleurothallis'' is a genus of orchids commonly called bonnet orchids. The genus name is derived from the Greek word , meaning "riblike branches". This refers to the rib-like stems of many species. The genus is often abbreviated as "Pths" in hor ...

'' subgenus ''Acianthera''. This splitting is a result of recent

DNA sequencing DNA sequencing is the process of determining the nucleic acid sequence – the order of nucleotides in DNA. It includes any method or technology that is used to determine the order of the four bases: adenine, thymine, cytosine, and guanine. The ...

Species

As of May 2025, Plants of the World Online accepts 302 species within ''Acianthera'':https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30366692-2#children *''Acianthera aberrans'' (Luer) Pupulin & Bogarín *''Acianthera aculeata'' (Luer & Hirtz) Luer *''Acianthera acuminatipetala'' (A.Samp.) Luer *''Acianthera adamantinensis'' (Brade) F.Barros *''Acianthera adeodata'' P.Ortiz, O.Pérez & E.Parra *''Acianthera adirii'' (Brade) Pridgeon & M.W.Chase *''Acianthera aechme'' (Luer) Pridgeon & M.W.Chase *''Acianthera agathophylla'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera alainii'' (Dod) A.Doucette *''Acianthera albiflora'' (Barb.Rodr.) Karremans *''Acianthera albopurpurea'' (Kraenzl.) Chiron & Van den Berg *''Acianthera alpestris'' (Sw.) A.Doucette *''Acianthera amandae'' Campacci & C.R.M.Silva *''Acianthera amaralii'' (Pabst) F.Barros & L.R.S.Guim. *''Acianthera amsleri'' Rykacz., Driessen & Kolan. *''Acianthera angustifolia'' (Lindl.) Luer *''Acianthera angustisepala'' (Ames & Correll) Pridgeon & M.W.Chase *''Acianthera antennata'' (Garay) Pridgeon & M.W.Chase *''Acianthera aphthosa'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera appendiculata'' (Cogn.) A.Doucette *''Acianthera asaroides'' (Kraenzl.) Pridgeon & M.W.Chase *''Acianthera atroglossa'' (Loefgr.) F.Barros & L.R.S.Guim. *''Acianthera atropurpurea'' (Barb.Rodr.) Chiron & Van den Berg *''Acianthera auriculata'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera bahorucensis'' (Luer) A.Doucette *''Acianthera barthelemyi'' (Luer) Karremans *''Acianthera berlinensis'' Damian, Chiron, Mitidieri & Rimarachin *''Acianthera beyrodtiana'' (Kraenzl.) Karremans *''Acianthera bibarbellata'' (Kraenzl.) F.Barros & L.R.S.Guim. *''Acianthera bicarinata'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera biceps'' (Luer & Hirtz) Luer *''Acianthera bicornuta'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera bidentata'' (Lindl.) F.Barros & V.T.Rodrigues *''Acianthera bidentula'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera bilobulata'' Zambrano & Solano *''Acianthera binotii'' (Regel) Pridgeon & M.W.Chase *''Acianthera bissei'' (Luer) Luer *''Acianthera boliviana'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera brachiloba'' (Hoehne) Pridgeon & M.W.Chase *''Acianthera bragae'' (Ruschi) F.Barros *''Acianthera breedlovei'' Soto Arenas, Solano & Salazar *''Acianthera breviflora'' (Lindl.) Luer *''Acianthera brunnescens'' (Schltr.) Karremans *''Acianthera bryonii'' Luer *''Acianthera butcheri'' (L.O.Williams) Pridgeon & M.W.Chase *''Acianthera cabiriae'' Pupulin, G.A.Rojas & J.D.Zuñiga *''Acianthera cachensis'' (Ames) Karremans *''Acianthera caldensis'' (Hoehne & Schltr.) F.Barros *''Acianthera calopedilon'' Toscano & Luer *''Acianthera calypso'' (Luer) Karremans & Rinc.-González *''Acianthera capanemae'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera caparaoensis'' (Brade) Pridgeon & M.W.Chase *''Acianthera capillaris'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera carcinopsis'' Luer & Sijm *''Acianthera carinata'' (C.Schweinf.) Luer *''Acianthera catujiensis'' Campacci & C.R.M.Silva *''Acianthera caymanensis'' (C.D.Adams) Karremans *''Acianthera cephalopodiglossa'' Toscano & Luer *''Acianthera cerberus'' (Luer & R.Vásquez) Pridgeon & M.W.Chase *''Acianthera chamelopoda'' (Luer) Luer *''Acianthera chionopa'' (Luer) Pridgeon & M.W.Chase *''Acianthera chrysantha'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera ciliata'' (Knowles & Westc.) F.Barros & L.R.S.Guim. *''Acianthera circumplexa'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera cogniauxiana'' (Schltr.) Pridgeon & M.W.Chase *''Acianthera compressicaulis'' (Dod) Pridgeon & M.W.Chase *''Acianthera consatae'' (Luer & R.Vásquez) Luer *''Acianthera cordatifolia'' (Dod) Pridgeon & M.W.Chase *''Acianthera cornejoi'' Luer *''Acianthera costabilis'' (Luer & R.Vásquez) Luer *''Acianthera costaricensis'' (Schltr.) Pupulin & Karremans *''Acianthera crassilabia'' (Ames & C.Schweinf.) Luer *''Acianthera cremasta'' (Luer & J.Portilla) Luer *''Acianthera crepiniana'' (Cogn.) Chiron & Van den Berg *''Acianthera crinita'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera cryptantha'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera cryptophoranthoides'' (Loefgr.) F.Barros *''Acianthera decipiens'' (Ames & C.Schweinf.) Pridgeon & M.W.Chase *''Acianthera decurrens'' (Poepp. & Endl.) Pridgeon & M.W.Chase *''Acianthera denticulata'' (Cogn.) Karremans *''Acianthera deserta'' (Luer & R.Vásquez) Luer *''Acianthera dichroa'' (Rchb.f.) F.Barros & L.R.S.Guim. *''Acianthera discophylla'' (Luer & Carnevali) Luer *''Acianthera dodsonii'' (Luer) Karremans & Rinc.-González *''Acianthera duartei'' (Hoehne) Pridgeon & M.W.Chase *''Acianthera dubbeldamii'' Luer & Sijm *''Acianthera dutrae'' (Pabst) C.N.Gonç. & Waechter *''Acianthera echinocarpa'' (C.Schweinf.) A.Doucette *''Acianthera echinosa'' Luer & Toscano *''Acianthera ellipsophylla'' (L.O.Williams) Pridgeon & M.W.Chase *''Acianthera erebatensis'' (Carnevali & G.A.Romero) Luer *''Acianthera ericae'' Luer *''Acianthera erinacea'' (Rchb.f.) A.Doucette *''Acianthera erosa'' (Urb.) A.Doucette *''Acianthera erythrogramma'' (Luer & Carnevali) Luer *''Acianthera esmeraldae'' (Luer & Hirtz) Luer *''Acianthera exarticulata'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera exdrasii'' (Luer & Toscano) Luer *''Acianthera eximia'' (L.O.Williams) Solano *''Acianthera fabiobarrosii'' (Borba & Semir) F.Barros & F.Pinheiro *''Acianthera fecunda'' Pupulin, G.A.Rojas & J.D.Zuñiga *''Acianthera fenestrata'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera fernandezii'' Luer *''Acianthera fockei'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera foetens'' (Lindl.) Chiron & Van den Berg *''Acianthera fornograndensis'' L.Kollmann & A.P.Fontana *''Acianthera freyi'' (Luer) F.Barros & V.T.Rodrigues *''Acianthera fumioi'' (T.Hashim.) Luer *''Acianthera garciae'' (Luer) Pridgeon & M.W.Chase *''Acianthera geminicaulina'' (Ames) Pridgeon & M.W.Chase *''Acianthera gigantea'' (Lindl.) A.Doucette *''Acianthera glanduligera'' (Lindl.) Luer *''Acianthera glumacea'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera gouveiae'' (A.Samp.) F.Barros & L.R.S.Guim. *''Acianthera gracilis'' (Barb.Rodr.) F.Barros & L.R.S.Guim. *''Acianthera gracilisepala'' (Brade) Luer *''Acianthera gradeae'' Chiron & Benelli *''Acianthera granitica'' (Luer & G.A.Romero) Luer *''Acianthera greenwoodii'' Soto Arenas *''Acianthera hamata'' Pupulin & G.A.Rojas *''Acianthera hartwegiifolia'' (H.Wendl. & Kraenzl.) Solano & Soto Arenas *''Acianthera hastulata'' (Rchb.f. & Warm.) Karremans *''Acianthera hatschbachii'' (Schltr.) Chiron & Van den Berg *''Acianthera heliconioides'' (Luer & R.Vásquez) Pridgeon & M.W.Chase *''Acianthera heliconiscapa'' (Hoehne) F.Barros *''Acianthera henrici'' (Schltr.) Luer *''Acianthera heringeri'' (Hoehne) F.Barros *''Acianthera herrerae'' (Luer) Solano & Soto Arenas *''Acianthera herzogii'' (Schltr.) Baumbach *''Acianthera heteropetala'' (Luer) Pridgeon & M.W.Chase *''Acianthera hintonii'' (L.O.Williams) A.Doucette *''Acianthera hirsutula'' (Fawc. & Rendle) Pridgeon & M.W.Chase *''Acianthera hirtipes'' (Schltr.) Rojas-Alv. & Karremans *''Acianthera hirtzii'' (Luer) Karremans & Rinc.-González *''Acianthera hoffmannseggiana'' (Rchb.f.) F.Barros *''Acianthera hondurensis'' (Ames) Pridgeon & M.W.Chase *''Acianthera hygrophila'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera hystrix'' (Kraenzl.) F.Barros *''Acianthera imitator'' Toscano, Luer & L.Kollmann *''Acianthera inaequalis'' (Lindl.) F.Barros & L.R.S.Guim. *''Acianthera johannensis'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera johnsonii'' (Ames) Pridgeon & M.W.Chase *''Acianthera jordanensis'' (Brade) F.Barros *''Acianthera juxtaposita'' (Luer) Luer *''Acianthera kateora'' (Garay) Karremans & Rinc.-González *''Acianthera kegelii'' (Rchb.f.) Luer *''Acianthera klingelfusii'' Luer, Toscano & Baptista *''Acianthera klotzschiana'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera krahnii'' Luer & Vásquez *''Acianthera lamia'' (Luer) Pridgeon & M.W.Chase *''Acianthera langeana'' (Kraenzl.) Pridgeon & M.W.Chase *''Acianthera lappago'' (Luer) A.Doucette *''Acianthera laxa'' (Sw.) A.Doucette *''Acianthera lepidota'' (L.O.Williams) Pridgeon & M.W.Chase *''Acianthera leptotifolia'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera limae'' (Porto & Brade) Pridgeon & M.W.Chase *''Acianthera litensis'' (Luer & Hirtz) Luer *''Acianthera lojae'' (Schltr.) Luer *''Acianthera lueri'' Kolan. & Szlach. *''Acianthera luteola'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera macilenta'' Luer & Hirtz *''Acianthera macropoda'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera macuconensis'' (Barb.Rodr.) F.Barros *''Acianthera maculiglossa'' Chiron & N.Sanson *''Acianthera madisonii'' (Luer) Pridgeon & M.W.Chase *''Acianthera magalhanesii'' (Pabst) F.Barros *''Acianthera majakoluckae'' Soto Arenas & Solano *''Acianthera malachantha'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera marleniae'' Damian, Chiron & Mitidieri *''Acianthera marquesii'' Luer & Toscano *''Acianthera marumbyana'' (Garay) Luer *''Acianthera melachila'' (Barb.Rodr.) Luer *''Acianthera melanochthoda'' (Luer & Hirtz) Pridgeon & M.W.Chase *''Acianthera melanoglossa'' (Luer & R.Escobar) Luer *''Acianthera mendozae'' Luer *''Acianthera mexiae'' (Luer) Pridgeon & M.W.Chase *''Acianthera micrantha'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera minima'' (Cogn.) F.Barros *''Acianthera minuta'' (Rolfe) Karremans *''Acianthera miqueliana'' (H.Focke) Pridgeon & M.W.Chase *''Acianthera modestissima'' (Rchb.f. & Warm.) Pridgeon & M.W.Chase *''Acianthera monophylla'' (Hook.) Karremans *''Acianthera montana'' (Barb.Rodr.) F.Barros & L.R.S.Guim. *''Acianthera morenoi'' (Luer) Pridgeon & M.W.Chase *''Acianthera morilloi'' (Carnevali & I.Ramírez) Luer *''Acianthera moronae'' (Luer & Hirtz) Luer *''Acianthera murex'' (Rchb.f.) Luer *''Acianthera murexoidea'' (Pabst) Pridgeon & M.W.Chase *''Acianthera muscicola'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera muscosa'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera myrticola'' (Barb.Rodr.) F.Barros & L.R.S.Guim. *''Acianthera nellyae'' (P.Ortiz) Karremans *''Acianthera nemorosa'' (Barb.Rodr.) F.Barros *''Acianthera nikoleae'' A.Doucette & J.Portilla *''Acianthera obscura'' (A.Rich. & Galeotti) Pridgeon & M.W.Chase *''Acianthera ochreata'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera octophrys'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera odontotepala'' (Rchb.f.) Luer *''Acianthera ofella'' (Luer) Pridgeon & M.W.Chase *''Acianthera oligantha'' (Barb.Rodr.) F.Barros *''Acianthera omissa'' (Luer) Pridgeon & M.W.Chase *''Acianthera oricola'' (H.Stenzel) Karremans, Chiron & Van den Berg *''Acianthera oscitans'' (Ames) Pridgeon & M.W.Chase *''Acianthera pacayana'' (Schltr.) Solano & Soto Arenas *''Acianthera panduripetala'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera pantasmi'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera pantasmoides'' (C.Schweinf.) Pridgeon & M.W.Chase *''Acianthera papillosa'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera paradoxa'' (Luer & Dalström) Karremans *''Acianthera pardipes'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera pariaensis'' (Carnevali & G.A.Romero) Carnevali & G.A.Romero *''Acianthera parva'' (Rolfe) F.Barros & L.R.S.Guim. *''Acianthera pavimentata'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera pazii'' Luer *''Acianthera pectinata'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera pendens'' (Dod) A.Doucette *''Acianthera per-dusenii'' (Hoehne) F.Barros & L.R.S.Guim. *''Acianthera pernambucensis'' (Rolfe) F.Barros *''Acianthera phoenicoptera'' (Carnevali & G.A.Romero) Luer *''Acianthera phrynoglossa'' (Luer & Hirtz) A.Doucette *''Acianthera platystachys'' (Regel) Chiron & Van den Berg *''Acianthera pollardiana'' Solano *''Acianthera polystachya'' (Ruiz & Pav.) Pupulin *''Acianthera portilloi'' (Luer & R.Escobar) Karremans & Rinc.-González *''Acianthera privigna'' (Luer) A.Doucette *''Acianthera prognatha'' (Luer & R.Escobar) Pridgeon & M.W.Chase *''Acianthera prolifera'' (Herb. ex Lindl.) Pridgeon & M.W.Chase *''Acianthera prostrata'' (Lindl.) A.Doucette *''Acianthera pubescens'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera punctatiflora'' (Luer) Pridgeon & M.W.Chase *''Acianthera punicea'' (Luer) Pridgeon & M.W.Chase *''Acianthera purpurascens'' (Luer & Hirtz) Karremans *''Acianthera purpureoviolacea'' (Cogn.) F.Barros *''Acianthera pustulata'' Zambrano & Solano *''Acianthera quadricristata'' (Luer & Hirtz) Luer *''Acianthera quadriserrata'' (Luer) Pridgeon & M.W.Chase *''Acianthera quisqueyana'' (Dod) A.Doucette *''Acianthera ramosa'' (Barb.Rodr.) F.Barros *''Acianthera recurva'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera rinkei'' Luer *''Acianthera rodolfovasquezii'' Damian *''Acianthera rodrigoi'' (Luer) Luer *''Acianthera rodriguesii'' (Cogn.) Pridgeon & M.W.Chase *''Acianthera rostellata'' (Barb.Rodr.) Luer *''Acianthera rubroviridis'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera ruizii'' Damian *''Acianthera sandaliorum'' (G.A.Romero & Carnevali) Luer *''Acianthera saraca-taquerensis'' Campacci & J.B.F.Silva *''Acianthera sarcosepala'' (Carnevali & I.Ramírez) Carnevali & G.A.Romero *''Acianthera saundersiana'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera saurocephala'' (G.Lodd.) Pridgeon & M.W.Chase *''Acianthera scabripes'' (Lindl.) Karremans *''Acianthera scalpricaulis'' (Luer) Pridgeon & M.W.Chase *''Acianthera serpentula'' (Barb.Rodr.) F.Barros *''Acianthera serratifolia'' Rinc.-González & Karremans *''Acianthera serrulata'' (Barb.Rodr.) Karremans *''Acianthera serrulatipetala'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera sicaria'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera sicariopsis'' (Luer) Pridgeon & M.W.Chase *''Acianthera sicula'' (Luer & R.Vásquez) Luer *''Acianthera sigmoidea'' (Ames & C.Schweinf.) A.Doucette *''Acianthera silvae'' (Luer & Toscano) Luer *''Acianthera similis'' (Schltr.) Karremans, Chiron & Van den Berg *''Acianthera simpliciflora'' (Dod) A.Doucette *''Acianthera sonderiana'' (Rchb.f.) Pridgeon & M.W.Chase *''Acianthera sotoana'' Solano *''Acianthera stenzelii'' Luer *''Acianthera strupifolia'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera subrotundifolia'' (Cogn.) F.Barros & V.T.Rodrigues *''Acianthera sudae'' J.Ponert, Chumová, Mandáková & P.Trávn. *''Acianthera sulcata'' (Porsch) F.Barros & V.T.Rodrigues *''Acianthera sulphurea'' (Barb.Rodr.) F.Barros & V.T.Rodrigues *''Acianthera tanyae'' Luer & Cornejo *''Acianthera teres'' (Lindl.) Borba *''Acianthera testifolia'' (Sw.) Solano *''Acianthera thysana'' (Luer & J.Portilla) Karremans *''Acianthera tikalensis'' (Correll & C.Schweinf.) Pridgeon & M.W.Chase *''Acianthera toachica'' (Luer & Dodson) Luer *''Acianthera tokachii'' (Luer) Luer *''Acianthera translucida'' (Barb.Rodr.) Luer *''Acianthera tricarinata'' (Poepp. & Endl.) Pridgeon & M.W.Chase *''Acianthera trichophora'' (Lindl.) A.Doucette *''Acianthera tristis'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera tunguraguae'' (F.Lehm. & Kraenzl.) A.Doucette *''Acianthera unguicallosa'' (Ames & C.Schweinf.) Solano *''Acianthera variegata'' (Barb.Rodr.) Campacci *''Acianthera venulosa'' Luer *''Acianthera verecunda'' (Schltr.) Pridgeon & M.W.Chase *''Acianthera villahermosae'' Sierra-Ariza, Rinc.-González & Karremans *''Acianthera violacea'' (A.Rich. & Galeotti) Pridgeon & M.W.Chase *''Acianthera violaceomaculata'' (Hoehne) Pridgeon & M.W.Chase *''Acianthera viridis'' (Luer & Hirtz) Luer *''Acianthera wageneriana'' (Klotzsch) Pridgeon & M.W.Chase *''Acianthera wawraeana'' (Barb.Rodr.) F.Barros & V.T.Rodrigues *''Acianthera welsiae-windischiae'' (Pabst) Pridgeon & M.W.Chase *''Acianthera wilsonii'' (Lindl.) Pridgeon & M.W.Chase *''Acianthera wyvern'' (Luer & R.Escobar) Pridgeon & M.W.Chase *''Acianthera yauaperyensis'' (Barb.Rodr.) Pridgeon & M.W.Chase *''Acianthera zumbae'' (Luer & Hirtz) Luer

References

External links

* * {{Taxonbar, from=Q28095 Acianthera, Pleurothallidinae genera