Sigmatostalix tenuirostris Kraenzl. 1922 Photo by © Jay Pfahl.
Another Flower? Photo courtesy of Eric Hunt, plant grown by Dan Newman of Hanging Gardens.
Another Clone? Photo courtesy of Gilberto Escobar Copyright © , and the Dr Leslie Garay Archives
Common Name The Delicate Rostrum Sigmatostalix
Occurs in Colombia around elevations of 1800 meters as a miniature sized, cool growing epiphyte with narrowly egg-shaped, bright, shiny, flattened, sharp-edged, longitudinally rugose pseudobulbs carrying a single, apical, dark green, linear to linear-lanceolate, acute leaf that is conduplicate basally and blooms in the spring on an axillary, 2 1/2 to 6" [6 to 15 cm] long, several flowered, paniculate inflorescence with the successively single flowers arising in clusters on short branches
There are three different flowers represented here and mine [the first] is the closest to the described plant. The Second 2 do not have the central tooth on the lip
Synonyms Oncidium tenuirostris [Kraenzl] Chase & NH Wms. 2008
References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 drawing fide to the first photo; Orchid Species Culture Oncidium/Odontoglossum Alliance Bakers 2006; AOS Bulletin Vol 77 No 12 2008 as Oncidium tenuirostris