Oncidium klotzschianum Rchb. f. 1852 SECTION Excavata

Inflorescence Photo by Pupulin, Used under permission of Epidendra Website CR

Part shadeCool MOSTLYSpring andFall

Common Name Klotzsch's Oncidium [German Herbarium Director]

Flower Size 1 1/2" [3.75 cm]

Found from Costa Rica, Panama, Venezuela, Colombia, Ecuador and Peru in lower montane forests at elevations of 1200 to 1800 meters on shady branches as a medium sized, cool growing epiphyte with oval compressed psuedobulbs suffused and marked with brown and subtended by 3 to 4 foliaceous bracts and having a single apical, linear-lanceolate leaf that blooms mostly in the spring and again in the fall with a basal, from the leaf bearing sheaths, 1 to 4' [30 to 120 cm] long, sub-erect to drooping, paniculate inflorescence arising on a mature pseudobulb with many flowers.

This species is similar to and often confused with O obryzatum and O obryzatioides but differs in the rounded petals and in the calli of the lip.

CAUTION Current references add this species as a synonym of O nebulosum at present I have kept them and their synonyms separate so please use with caution!

Synonyms Oncidium angustisepalum Kraenzl. 1922; Oncidium graciliforme C. Schweinf. 1938; Oncidium multiflorum Hort. ex Soysa 1937; Oncidium sclerophyllum Kraenzl. 1922; Vitekorchis klotzschiana (Rchb. f.) Romowicz & Szlach.2006

References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; *Bot. Zeitung (Berlin) 10(40): 695. 1852; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as O angustisepalum drawing fide; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as O sclerophyllum; Repert. Sp. Nov. Regni. Veg. Beih. 17: 84. Panama Schlechter 1922; AOS Bulletin Vol 27 No 6 1958; Venezuelan Orchids Illustrated Vol 6 Dunsterville & Garay 1976 not = O picturatum; Orchids of Venezuela An Illustrated Field Guide Vol 2 Dunsterville & Garay 1979 not = O picturatum; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1997; Rudolf Schlechter Die Orchideen Lieferung 33-6 1997 as O obryzatum photo good; Native Ecuadorian Orchids Vol 4 Dodson 2003 photo fide; Orchid Species Culture: Oncidium Odontoglossum Bakers 2005; Orchid Species of Peru Zelenko Bermudez 2009 photo fide; Orchids of Costa Rica Vol 1 Morales 2009 photo fide; An Illustrated Field Guide to the Orchids of the Yotoco Forest Reserve Colombia Kolanowska, Escobar, Sanchez & Szlachetko 2011 as Vitekorchis klotzschiana drawing fide