Sigmatostalix pseudounguiculata Pupulin & Dressler 2000

Plant and Flowers

Photos by Walter Schug

Flower Closeup

Another Angle Photos by P. Catling Copyright , and the Dr Leslie Garay Archives

Common Name The False Clawed Sigmatostalix

Flower Size

Found in Costa Rica Pacific watershed of Cordillera de Talamanca in Costa Rica, on the Pacific slope of the Talamanca Range in disturbed vegetation in premontane wet forest at elevations around 1000 meters as a mini-miniature sized, warm to cool growing, caespitose epiphyte with ovate, laterally compressed,pseudobulbs enveloped basally scarious margined basaly, green blotched with purple foliaceous, sheaths and carrying asingle, apical, linear-oblong, submembraneous, basally conduplicate, acute to subobtuse apically, narrowing below intothe distinct petiolate base leaf that blooms in the winter on an axillary, from the basal leaves, to 2" [5 cm] long, provided with 2, narrowly ovate, tubular sheaths, to 3 simultaneously, remotely 1 to rarely 3 flowered inflorescence.

"Sigmatostalix pseudounguiculata is closely related to S. unguiculata L.O. Williams, but the lateral lobes of lip in P. pseudounguiculata are truncate, not acute, white instead of yellow, and in most of the specimens they are turned back toward the claw." Pupulin 2003

Synonyms Oncidium pseudounguiculatum [Pupulin & Dressler] Chase & NH Wms. 2008

References W3 Tropicos, Kew Monocot list , IPNI ; Band 1C lieferung 44-45 pg 2763 - 2898 Brieger 2001; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Harvard Papers in Botany, Vol. 8, No. 1, pp. 3559 Pupulin 2003 drawing fide; AOS Bulletin Vol 77 No 12 2008 as Oncidium pseudounguiculatum