# Stenostephanus

Stenostephanus is a genus of plants in the family Acanthaceae. It includes 94 species native to the tropical Americas, ranging from northeastern Mexico to Bolivia and southeastern Brazil.

## Species

Species accepted by the Plants of the World Online as of January 2024:
* Stenostephanus aglaus (Leonard) J.R.I.Wood
* Stenostephanus alushii T.F.Daniel
* Stenostephanus ampelinus (Leonard) J.R.I.Wood
* Stenostephanus anderssonii Wassh.
* Stenostephanus antiquorum J.R.I.Wood
* Stenostephanus asplundii (Wassh.) Wassh.
* Stenostephanus atrocalyx J.R.I.Wood
* Stenostephanus atropurpureus (Lindau) J.R.I.Wood
* Stenostephanus azureus (D.N.Gibson) T.F.Daniel
* Stenostephanus blepharorhachis (Lindau) T.F.Daniel ex Hammel
* Stenostephanus borarum J.R.I.Wood & R.Villanueva
* Stenostephanus breedlovei T.F.Daniel
* Stenostephanus brevistamineus R.Villanueva & J.R.I.Wood
* Stenostephanus cabrerae (Leonard) T.F.Daniel, McDade & Kiel
* Stenostephanus charien (Leonard) J.R.I.Wood
* Stenostephanus charitopes (Leonard) J.R.I.Wood
* Stenostephanus chavesii Hammel
* Stenostephanus chiapensis T.F.Daniel
* Stenostephanus citrinus (D.N.Gibson) McDade & Hammel
* Stenostephanus clarkii Wassh.
* Stenostephanus cleefii (Wassh.) J.R.I.Wood
* Stenostephanus cochabambensis Wassh.
* Stenostephanus crenulatus (Britton ex Rusby) Wassh.
* Stenostephanus cuatrecasasii (Leonard) J.R.I.Wood
* Stenostephanus cuscoensis J.R.I.Wood
* Stenostephanus cyaneus (Lindau) J.R.I.Wood
* Stenostephanus davidsonii Wassh.
* Stenostephanus densiflorus J.R.I.Wood
* Stenostephanus diversicolor (Lindau) J.R.I.Wood
* Stenostephanus enarthrocoma (Leonard) J.R.I.Wood
* Stenostephanus ericae (Mildbr. ex Wassh.) J.R.I.Wood & R.Villanueva
* Stenostephanus florifer (Leonard) J.R.I.Wood
* Stenostephanus gigas (Leonard) T.F.Daniel, McDade & Kiel
* Stenostephanus glaber (Leonard) T.F.Daniel
* Stenostephanus gracilis (Oerst.) T.F.Daniel
* Stenostephanus guerrerensis T.F.Daniel
* Stenostephanus haematodes (Schltdl.) T.F.Daniel
* Stenostephanus harleyi (Wassh.) T.F.Daniel
* Stenostephanus hispidulus (Leonard) J.R.I.Wood
* Stenostephanus holm-nielsenii Wassh.
* Stenostephanus hondurensis T.F.Daniel
* Stenostephanus jamesonii (Wassh.) Wassh.
* Stenostephanus kirkbridei (Wassh.) J.R.I.Wood
* Stenostephanus krukoffii Wassh.
* Stenostephanus lamprus (Leonard) J.R.I.Wood
* Stenostephanus lasiostachyus Nees
* Stenostephanus latifolius (Wassh.) J.R.I.Wood
* Stenostephanus latilabris (D.N.Gibson) T.F.Daniel
* Stenostephanus laxus (Wassh.) Wassh.
* Stenostephanus leiorhachis (Lindau) Hammel
* Stenostephanus leonardianus (J.R.I.Wood) J.R.I.Wood
* Stenostephanus lobeliiformis Nees
* Stenostephanus longistaminus (Ruiz & Pav.) V.M.Baum
* Stenostephanus lugonis (Wassh.) Wassh.
* Stenostephanus luteynii (Wassh.) Wassh.
* Stenostephanus lyman-smithii Wassh.
* Stenostephanus macrochilus (Lindau) J.R.I.Wood
* Stenostephanus macrolobus (Lindau) J.R.I.Wood
* Stenostephanus madidiensis J.R.I.Wood
* Stenostephanus madrensis T.F.Daniel
* Stenostephanus magdalenensis (Wassh.) J.R.I.Wood
* Stenostephanus maximus (J.R.I.Wood) J.R.I.Wood
* Stenostephanus monolophus (Donn.Sm.) T.F.Daniel
* Stenostephanus oaxacanus T.F.Daniel
* Stenostephanus pilosus (Leonard) J.R.I.Wood
* Stenostephanus puberulus Lindau
* Stenostephanus purpusii (Brandegee) T.F.Daniel
* Stenostephanus putumayensis (Leonard) J.R.I.Wood
* Stenostephanus pycnostachys (Leonard) J.R.I.Wood
* Stenostephanus pyramidalis (Lindau) Wassh.
* Stenostephanus racemosus (J.R.I.Wood) J.R.I.Wood
* Stenostephanus reflexiflorus (Leonard) J.R.I.Wood
* Stenostephanus ruberrimus (D.N.Gibson) T.F.Daniel
* Stenostephanus sanguineus (Nees) Wassh.
* Stenostephanus scolnikae (Leonard) J.R.I.Wood
* Stenostephanus sehuencasii J.R.I.Wood
* Stenostephanus sessilifolius (Oerst.) T.F.Daniel
* Stenostephanus silvaticus (Nees) T.F.Daniel
* Stenostephanus spicatus Wassh. & J.R.I.Wood
* Stenostephanus sprucei (Lindau) Wassh. & J.R.I.Wood
* Stenostephanus strictus (Leonard) T.F.Daniel ex Hammel
* Stenostephanus suburceolatus J.R.I.Wood
* Stenostephanus syscius (Leonard) J.R.I.Wood
* Stenostephanus tacanensis (Acosta & R.Fernández) T.F.Daniel
* Stenostephanus tachirensis (Wassh.) J.R.I.Wood
* Stenostephanus tenellus Wassh. & J.R.I.Wood
* Stenostephanus ventricosus (Donn.Sm.) T.F.Daniel ex Hammel & McDade
* Stenostephanus villosus (Gómez-Laur. & Hammel) McDade
* Stenostephanus wallnoeferi Wassh.
* Stenostephanus wasshausenii J.R.I.Wood
* Stenostephanus wilburii (McDade) McDade
* Stenostephanus xanthothrix (Leonard) J.R.I.Wood
* Stenostephanus zuliensis (Wassh.) J.R.I.Wood

## Taxonomy

Many genera are now considered synonyms of Stenostephanus. Kalbreyeriella, first described in 1922, was named in honour of Guillermo Kalbreyer (1847–1912), a German plant collector who was sent by James Veitch & Sons of Chelsea, London to collect new plants in West Africa and South America.