They are closely related to the massive genus "Pleurothallis" and "Masdevallia". Most of the species formerly placed under "Pleurothallis" subgenus "Acianthera". But the distinction with several "Pleurothallis" subgenera is blurred (see Reference). Pleurothallis lamellaris is a species of orchid found from central Colombia to Bolivia. "Pleurothallis" grows in dry or wet, tropical or temperate climates.