SUBGENUS Acianthera SECTION Sicariae SUBSECTION Sicariae Luer 1986

Characterized by the triquetrous ramicauls with well developed sharp wings and they are continuous with the margins of the blade of the leaf above. The subgenus Arthrosia has similar three-edged ramicauls but the articulated lip of this subsection immediately separate them.

1. Pleurothallis aechme Luer 1976 Ecuador

2. Pleurothallis casapensis Lindl. 1842 Colombia, Ecuador, Peru, Bolivia and Venezuela

3. Pleurothallis circumplexa Lindl. 1838 Mexico, Guatemala, El Salvador, Honduras, Nicaragua and Costa Rica

4. Pleurothallis cogniauxiana Schltr. 1907 Nicaragua, Costa Rica and Panama

5. Pleurothallis compressicaulis Dod 1984 Haiti and the Dominican Republic

6. Pleurothallis decurrens Poepp. & Endl. 1836 Colombia, Peru and Ecuador

7. Pleurothallis exarticulata Barb. Rodr. 1881 Brazil

8. Pleurothallis gacayana Schltr. 1925 Guatemala and Costa Rica

9. Pleurothallis luteola Lindl. 1841 Brazil

10. Pleurothallis mexiae Luer 1999 Peru

11. Pleurothallis pantasmi Rchb.f.1855 Nicaragua, Costa Rica and Ecuador

12. Pleurothallis pantasmoides C.Schweinf. 1951 Ecuador and Peru

13. Pleurothallis rubroviridis Lindl. 1858 Cuba, Venezuela, Colombia, Ecuador and Peru

14. Pleurothallis scalpricaulis Luer 1976 Bolivia, Peru and Ecuador

15. Pleurothallis sicaria Lindl 1849 Costa Rica, Panama, Colombia, Ecuador and Venezuela

16. Pleurothallis spilantha Barb.Rodr. 1881 Brazil

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