Monographs Details: Oncidium pusillum Lindl.
Authority: Schweinfurth, Charles. 1967. Orchidaceae of the Guayana Highland. Mem. New York Bot. Gard. 14: 69-214.
Family:Orchidaceae
Scientific Name:Oncidium pusillum Lindl.
Description:Distribution and Ecology - BRITISH GUIANA. Upper Rupununi River, near Dadanawa, lat. 2°45'N., May 28, 1922, J. S. D e La Cruz 1378; same locality, epiphytic, flowers yellow, June 14, 1922, De La Cruz 1510; Kamakusa, upper Mazaruni River, long, about 59°50' W., July 11-22, 1923, De La Cruz 4163; basin of Rupununi River, Isherton, lat. about 2°20'N., epiphyte in forest, petals greenish yellow or pale yellow, lip with brown spots, November 9-15, 1937, A. C. Smith 2427; Kaieteur Plateau, rare epiphyte, B. Maguire 23099. COLOMBIA. Vaupés: Rio Kuduyari (tributary of Rio Vaupés), Yapobodá, epiphyte in quartzitic savanna, flowers yellow spotted with brown, October 4-6, 1951, R. E. Schultes & I. Cabrera 14322. VENEZUELA. Bolivar: Salto de Para, Medio Caura, 170 m alt., in the margin of woods on tree trunks, November 3, 1939, L. Williams 11486; woods of Rio Uonan, (tributary of Rio Icabaru), region of Rio Caroni, 435 m alt., October 1, 1916, F. Cardona 1700; Chimanta Massif, on lower northwestern slopes of Abácapa-tepuí, in vicinity of Camp I along Rio Abdcapa, 420 m alt., in rich rain forest, pendent from slender branch, several plants clustered, leaves subcoriaceous, dull green, flowers yellow throughout with brown-copper spots and bands in the center of the crest of lip, March 30-31, 1953, J. A. Steyermark 74773; along Río Chicandn above Puerta Lema (near Sierra de Lema), lat. 6°5'N., long. 62°W., 300 m alt., in lowland valley, epiphyte on tree branches in rain forest, August 24, 1961, Steyermark 89507. Amazonas: Rio Casiquiare and tributaries, along lower part of Rio Siapa, 130 m alt., epiphytic on branches of shrub, sepals and column yellow, petals and lip yellow witli inaroon dots at the base, April 1, 1953, B. Maguire & J. J. Wurdack 34831; Rfos Pacimoni-Yatua, Casiquiare, along uppermost Rfo Yatua, 100-140 m alt., epiphyte in flooded forest, flowers yellow spotted with red toward the center, December 7-8, 1953, B. Maguire, J. J. Wurdack & G. S. Bunting 36745. A widespread species ranging from MEXICO, Central America and the West Indies to COLOMBIA, SURINAM (type of Epidendrum pusillum), BRAZIL, PERU and BOLIVIA.

Discussion:

Epidendrum pusillum L., Sp. PI. ed. 2. 2: 1352. 1763.

Distribution:Guyana South America| Venezuela South America| Mexico North America| Colombia South America| Suriname South America| Brazil South America| Peru South America| Bolivia South America| West Indies|