SUBGENUS Pleurothallis SECTION Pleurothallis SUBSECTION Acroniae SERIES Amphygiae Luer 1998

Characterized by the caespitose habit with well developed ramicauls that are usually longer than the leaf and carrying a terminal, singel flowered [this is the basis for the 2 series], long-pedunculate inflorescence. The flowers differ in the completely connate lateral sepals form a synsepal that is similar to the dorsal sepal. The petals are prominent, membraneous and mostly broad, frequently descending and sigmoid in outline, and are often ciliate, denticulate, fringed or pubescent. The lip is [one exception P nox-media] triangular to trilobed and the apex is acute or apiculate if obtuse and the lobes are more or less incurved or erect and are not prolonged into lateral lobes. The variously developed glenion is mostly present but an intricater callus is only occasionally present on the disc. The base of the lip is variously deflexed below the lateral angles and hinged tothe thickened base of an obsolescent column foot. The semiterete, usually short column carries an apical anther and a stigma which is transverse or bilobed and the ovoid pollina have a minute, granular viscidium. This subsection and amphygiae are not distinctly separated in various borderline species and for this reason they later were separated by Luer into the genus Acronia with three sections, Acronia, Amphygiae and Macrophyllae-fasciculatae.

  1. Pleurothallis allenii L.O. Williams 1940 Panama

  2. Pleurothallis amphigya Luer & R.Escobar 1981 Colombia

  3. Pleurothallis ankyloglossa Luer & Hirtz 2000 Ecuador

  4. Pleurothallis annectens Luer 1977 Panama

  5. Pleurothallis cauda-phocae Luer & Hirtz 1988 Ecuador

  6. Pleurothallis dukei Luer 1997 Panama

  7. Pleurothallis forceps-cancri Luer & R. Escobar 1981 Colombia

  8. Pleurothallis fugax Luer & R.Escobar 1981 Colombia

  9. Pleurothallis gracilipedunculata Foldats 1968 Venezuela and Colombia

  10. Pleurothallis habenula Luer & R.Escobar 1981 Colombia and Ecuador

  11. Pleurothallis knappiae Luer 2000 Panama

  12. Pleurothallis lobata Luer 1996 Colombia

  13. Pleurothallis orecta Luer & R.Escobar 1996 Colombia

  14. Pleurothallis quadricaudata Schltr. 1920 Colombia and Ecuador

  15. Pleurothallis quaternaria Luer 1998 Colombia

  16. Pleurothallis sextonii Luer 2002 Colombia

  17. Pleurothallis simulans L.O.Williams 1940 Panama

  18. Pleurothallis sobrina Luer & Hirtz 1996 Ecuador

  19. Pleurothallis somnolenta Luer 1996 Colombia

  20. Pleurothallis stevensonii Luer 1975 Ecuador

  21. Pleurothallis tetrachaeta Luer & Hirtz 1998 Ecuador

  22. Pleurothallis thoerleae (Luer) J.M.H.Shaw 2016 Ecuador?

  23. Pleurothallis tipuloides Luer 1983 Colombia and Ecuador

  24. Pleurothallis wigginsii C.Schweif. 1948Ecuador