Monographs Details: Eriopsis biloba Lindl.
Authority: Schweinfurth, Charles. 1967. Orchidaceae of the Guayana Highland. Mem. New York Bot. Gard. 14: 69-214.
Family:Orchidaceae
Scientific Name:Eriopsis biloba Lindl.
Description:Distribution and Ecology - BRITISH GUIANA. Pakaraima Mts., Mt. Ayanganna, between Ayanganna and Chinowieng, 1000-1200 m alt., terrestrial, flowers bronze with yellow-tipped lip, February 7-8, 1955, B. Maguire, W M. C. Bagshaw & C. K. Maguire 40636. COLOMBIA. Vaupes: Ajaju River, Cerro La Campana with a quartzite base, epiphytic on summit crags in open sunny exposures, about 369 m above forest floor or 646 m above sea level, flowers brown with tip of lip yellow and red-brown spotted, with odor of licorice, June 1-6, 1943, R. E. Schultes 5560. Amazonas- Vaupés: Rio Apaporis, Cachivera de Jirijirimo and surroundings, about 250 m alt., in clumps on sand, "Spikes of brownish yellow odorless flowers; tip of lip canary yellow with brown dots," June 11, 1951, R. E. Schultes & I. Cabrera 12369. VENEZUELA. Bolivar: Mt. Roraima, upper slopes, McConnell & Quelch 34, Schomburgk 1679a; Gran Sabana near Kavanayen, about 1200 m alt., (ten Houten), G. C. K. Dunsterville 562; Sororopan-tepui, on crest of cerro between east and west ends, 2255 m alt., terrestrial, leaves erect, coriaceous and deep green, peduncle purple, sepals and petals wine-lavender and dull green at base, lip brown-lavender having central small lobe yellow with three purple spots, column pale green, November 14, 1944, J. A. Steyermark 60138; Auyan-tepui, in the plateau from its central part at 1700 m to its outer edge at 2300 m alt., E. Foldats 2596; same locality, 1800-2200 m alt., abundant in the central part of the upper region, April, 1956, E. Foldats 2597; Auydn-tepui, Alto Caroni, 2100-2400 m alt., January. 1949, F Cardona 2742; Auyan-tepui, Region de "El Oso," Pannier & Schwabe 1888; Auyan-tepui, cumbre de la parte sureste (división occidental del cerro): entre "Oso Woods Camp" y el Rio Chunin, atravesando un macizo piano rocoso de arenisca, 1690-2100 m alt., common dry rock) savanna on expanses of flat part of plateau, scape maroon, sepals and petals chocolate-brown suffused with golden-fuh'ous "within and more golden-ta"wny at the base "without, pedicels dull olive green with dark green and maroon, lip black at the base, mostly chocolate-brown suffused with fulvous and the yellow apex spotted with brown, the crest pale yellow with minute brown spots, column arching, olive green with yellow apex. May 1, 1964, J. A. Steyermark 93206; Cerro Guaiquinima, Rio Pardgua, 1800 m alt., infrequent terrestrial among rocks in open savanna 1 km south of Cumbre Camp, flower "brownish- orange-yellow; lip more bronze with bronze-spotted yellowish apex," December 29, 1951, B. Maguire 32808; Ilu-tepui, Gran Sabana, between Enemasic and San Rafael, 1000 m alt., occasional terrestrial in savanna, "perianth bronze yellow; lip yellow-tipped, maculate," March 25, 1952, Maguire 33597; Sarven-tepui. along lower escarpment base, 1900-2050 m alt., epiphytic on lower part of tree trunk, "roots tuberous at tips. Tepals old gold with fine brown speckling; lip basally old gold with purple-brown lines, the central lobe yellow with purple dots; column yellow," January 13, 1953, J. J. Wurdack 34140; Churi-tepui (Muru-tepui), in upper cumbre, 2250-2300 m alt., terrestrial, "Tepals brownish-green; lip basally tan, apically cream with purple dots," January 26, 1953, Wurdack 34241; Chimantd-tepui, Torono-tepui, on north-facing slopes on summit above valley of Cafio Mojado, 2030-2150 m alt., frequent terrestrial in open dwarf forest, "Pseudobulb subterete, olive; lvs. erect, coriaceous, bronze to olive above, pale yellow-green below. Peduncle fleshy, up to 1 cm diam., maroon speckled pale green; pedicels and young sepals outside dull purple; fls. stramineous, the lip with yellow crest in late anthesis," February 21, 1955, J. A. Steyermark & J. J. Wurdack 1049. Amazonas: Cerro Sipapo (Pardque), 125 m alt., along trail near Base Camp, in mixed montane forest, January 25, 1949, B. Maguire & L. Politi 28598; same locality, 1500 m alt., frequent terrestrial in Camp Savanna, on rocks, "pseudobulbs with 2-3 lvs.; perianth yellowish-green, margined bronze red, terminal lobe of lip white with four red dots; column green, yellow tinged," January 21, 1949, Maguire & Politi 28532; Serrania Parú, Rio Parú, Cafio Asisa, Rio Ventuari, 2000 m alt., occasional terrestrial in cumbre, "tepals yellow-brown outside with purplish margin, inside purple-brown with yellow-brown centrally; lip yellow-brown, cream at apex with purple-brown spots; column brown-yellow," February 7, 1951, R. S. Cowan & J. J. Wurdack 31377; Cerro de la Neblina, Rio Yatua, 2000 m alt., occasional terrestrial in scrub forest 15—18 km southwest of Cumbre Camp, "Tepals brown-yellow with dull maroon margins; lip brown-yellow with dull maroon margins, the apical lobe white with purple splotching," December 1-2, 1957, B. Maguire, J. J. Wurdack & C. K. Maguire 42294; Rio Guainia, 1 km east of Maroa, 130 m alt., terrestrial in sabanita, "Tepals old gold, maroon-edged; lip basally old gold with fine maroon speckling, the apical lobe white with maroon speckling," July 1, 1959, J. J. Wurdack & L. S. Adderley 43273; Mt. Duida, 2000 m alt., in valley between peaks 7 and 16, flowers dull brown with a yellow lip, August 1928-April 1929, G. H. H. Tate 681 (type of E. grandibulbosa); same locality, Tate 653 (sterile). COSTA RICA (type of E. Wercklei) and PERU. While no origin was noted for E. biloba, the type of Pseuderiopsis Schomburgkii was cited from BRITISH GUIANA.

Discussion:

Pseuderiopsis Schomburgkii Reichb. f., Linnaea 22: 853. 1849.

Eriopsis Wercklei Schlechter, Fedde Repert. 16: 447. 1920.

Eriopsis grandibulbosa A. & S., Bull. Torrey Club 58: 350. 1931.

Distribution:Guyana South America| Colombia South America| Venezuela South America| Costa Rica South America| Peru South America|