SUBGENUS Ancipitia SECTION Ancipitia Luer 1986

Characterized by the sharply laterally compressed, ancipitous ramicauls except in one species that is 4 angled, the cordate and sessile leaves and the long pedicellate single flowers produced in a fasscile at the base of the leaf without an annulus. The sepals are more or less membraneous with the laterals connate. The petals are thickened towards the apex and the lips are diversely modified, often into bizarre shapes resembling insect and animal horns and ears. The morphology of the some parts of the flowers is quite variable among the species but the ramicauls, leaves, peduncles, sepals and petals are quite consistently the same.

TYPE species for the Section

!Pleurothallis anceps Luer 1979

1. Pleurothallis acinaciformis Wilson & Larsen 2019 COlombia

2. !Pleurothallis anceps Luer 1979 Colombia and Ecuador

3. Pleurothallis andreae Mark Wilson, B.T.Larsen & J.Portilla 2017 Colombia and Ecuador

4. Pleurothallis anthrax Luer & R. Escobar 1981 Colombia and Venezuela

5. Pleurothallis arietina Ames 1923 Costa Rica and Panama

6. Pleurothallis caniceps Luer 1982 Costaa Rica

7. Pleurothallis caprina Luer & R.Escobar 1981 Colombia

8. Pleurothallis condorensis Luer & Hirtz 1989 Ecuador

9. Pleurothallis crocodiliceps Rchb. f. 1855 Costa Rica, Panama, Colombia, Ecuador, Peru and Venezuela

10. Pleurothallis cypelligera Luer & Hirtz 2002 Ecuador

11. Pleurothallis driessenii Luer 2000

12. Pleurothallis dunstervillei Foldats 1968 Ecuador, Colombia, Peru and Venezuela

13. Pleurothallis duplex Luer & R.Escobar 1983 Colombia

14. Pleurothallis eumecocaulon Schltr.1923 Costa Rica and Panama

15. Pleurothallis furcifera Luer 1976Peru

16. Pleurothallis gratiosa Rchb. f. 1854 Venezuela

17. Pleurothallis harpago Luer 1979 Panama

18. Pleurothallis indecora Rodr.-Mart. & Karremans 2017 Colombia

19. Pleurothallis inornata Luer & Hirtz 1989 Ecuador

20. Pleurothallis instar Luer 1977 Panama

21. Pleurothallis kelsoae Mark Wilson, B.T.Larsen & J.Portilla 2017 Ecuador

22. Pleurothallis londonoi Luer 1996 Colombia

23. Pleurothallis lueriana Karremans & Rodr.-Mart. 2017 Colombia

24. Pleurothallis manningiana Mark Wilson, Salas Guerr. & B.T.Larsen 2017 Ecuador

25. Pleurothallis membracidoides Luer 1980 Colombia

26. Pleurothallis nelsonii Ames 1923 Mexico and Guatemala

27. Pleurothallis niveoglobula Luer 1975 Ecuador

28. Pleurothallis odobeniceps Luer 1989 Colombia

29. Pleurothallis onagriceps Luer & Hirtz 1989 Ecuador

30. Pleurothallis praecipua Luer 1980 Ecuador

31. Pleurothallis solium Luer 1982 Ecuador

32. Pleurothallis spathulipetala Luer 1996 Colombia

33. Pleurothallis viduata Luer 1981 Ecuador

34. Pleurothallis vorator Luer & R. Vásquez 1980 Ecuador and Bolivia

    SUBGENUS Ancipitia SECTION Tetragona Luer 1986

    Characterized by the 4 sided, compressed ramicaul

35. Pleurothallis tetragona Luer & Escobar 1981 Colombia

36. Pleurothallis wielii Mark Wilson, B.T.Larsen & J.Portilla 2017