Aa erosa (Rchb.f.) Schltr. 1912 Collection sheet and drawing by Romero and The Harvard Herbaria Website


Common Name The Erose Aa [refers to the margins of the floral bracts]

Flower Size .16" [4 mm]

Found in Peru as a small sized, cold growing terrestrial with a stem enveloped completely by numerous, loose, imbricating, tubular, hyaline sheaths apparently leafless that blooms in the late winter and early spring on a terminal, erect, cylindric, 1.48" [3.7 cm] long, densely many flowered inflorescence with short, broadly ovate, retuse, erose dentate hyaline floral bracts.

Synonyms *Altensteinia erosa Rchb.f. 1878

References W3 Tropicos, Kew Monocot list , IPNI ; Orchids of Peru Vol 1 Schweinfurth 1958 as Altensteinia erosa