SUBGENUS Acianthera SECTION Sicariae SUBSECTION Pectinatae Luer 1986

Characterized by the sharply compressed, ancipitous ramicauls with the adaxial margin is minutely to slightly sulcate below the junction with the leaf. Mostly occurs in Brazil and a few adjacent countries.

1. Pleurothallis hamosa Barb. Rodr. 1881 Brazil

2. Pleurothallis limae Porto & Brade 1940 Brazil

3. Pleurothallis pectinata Lindl. 1839 Bolivia and Brazil

4. Pleurothallis prolifera Herb. ex Lindl. 1830 Guyana, Venezuela, Bolivia and Brazil

5. Pleurothallis welsiae-windischiae Pabst 1978 Brazil