Oncidium heterodactylum Kraenzl. 1922 SECTION Heterantha

Side View of Flower Photos by Ecuagenera and their Ecuador Orchid Website

Part shade Cool

Common Name or Meaning The Different Sized Fingers Oncidium

Flower Size .4" [1 cm]

Found in Ecuador and northern Peru at elevations of 1900 to 2100 meters as a small sized, cool growing epiphyte with elliptical to narrowly ovate, laterally compressed, ancipitous pseudobulb enveloped basally by 2 short, leafless sheaths and carrying 2, apical, erect, lanceolate, obtuse, conduplicate towards the base leaf that blooms on a panicaulate, heteranthous, ascending, straight, 8 to 10 branched, each branch 3 to 7 fertile flowered, 1 to 2 abortive flowered inflorescence

Similar to and often cited as synomonous with O pentdactylon but differs in the less pronounced crook in the column and the upward pointing middle finger of the calli.

Synonyms Heteranthocidium heterodactylum (Kraenzl.) Szlach. & Kolan. 2015

References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 drawing good; Icones Planetarum Tropicarum Series II Orchids of Peru Plate 0139 Dodson & Bennett 1989 as O pendactylum fide; Oncidium Vol 1 Koniger 2004 drawing/photo fide