Monographs Details: Zygopetalum burkei Rchb.f.
Authority: Schweinfurth, Charles. 1967. Orchidaceae of the Guayana Highland. Mem. New York Bot. Gard. 14: 69-214.
Description:Distribution and Ecology - VENEZUELA. Bolivar: Mt. Roraima, 1800 m alt., Schomburgk s.n., Appun 1390, 1700 m alt., Im Thurn 50; upper slopes, McConnell & Quelch 26, fide Cogn.; same locality, southwest-facing quebrada near Rondon Camp, 2040 m alt., in forest, terrestrial, pseudobulb angled, leaves grass-green, erect, inflorescence erect with pale green peduncle, sepals and petals greenish yellow suffused or mottled with purple-brown, lip white with large purple callus in center and purple streaks below, column yellow above, streaked with brown-purple below, September 25, 1944, J. A. Steyermark 58680 (called "come-yek") ; southeastern portion of base of Carrao-tepui, 1460-1615 m alt., epiphyte on low shrubs in dwarf bush-swamp with Heliamphora, Stcgolepis and Bonnetia, pseudobulb 4-angled, leaves erect, more or less coriaceous and dull green, flowers ^ery fragrant, sepals and petals erect-ascending, dull pale green with dull lavender-brown streaks and mottling, lip white with erect purple crests, column pale yellow and streaked within and with a pair of descending yellow appendages, December 4-5, 1944, Steyermark 60855; Auydn-tepui, Pannier & Schwabe 1795; same locality, 1850 m alt., G. H. H. Tate 1213; same locality, 2200 m alt., Tate 1238; same locality, 2100-2300 m alt., January 1949, F. Cardona 2741; same locahty. South flank, Danta Flats, 1530 m alt., sandy-rocky soil with occasional thick shrubby growth and 10-15 ft scrubby trees, growing in grass of about the same height as plant, G. C. K. Dunsterville 771; Cerro Guaiquinima, Rio Pardgua, 1800 m alt., along west escarpment 1 km west of Cumbre Camp, rare terrestrial among rocks, flowers greenish, December 30, 1951, B. Maguire 32845; same locality, "North Valley," 1600-1700 m alt., frequent terrestrial in bogs or on rocks, flowers green striped with bronze, lip white with purple processes, January 4, 1952, Maguire 32962; Chimantd Massif, 2000 m alt., on plateau of southeast-facing upper shoulder of Apdcara-tepui, in elfin forest formation, common on boulders, pseudobulb subterete-ridged, flowers very fragrant, sepals pale green spotted irregularly with dull brown-lavender, petals pale green with 6-7 purplish-brown stripes, lip white with crest of rose-orchid ridges, column yellow or yellow-green, streaked with purple, June 19, 1953, Steyermark 75726; Auydn-tepui, 2000 m alt., terrestrial, more abundant in plateau portion especially in shrubby savannas, flowers green, the sepals and petals with brown spots and lines, April, 1956, E. Foldats 2595; same locality, cumbre de la parte sureste (division occidental del cerro): entre "Oso Woods Camp" y el Rio Chunin, atravesando un macizo piano rocoso de arenisca, 1690-2100 m alt., terrestrial in open rocky places along zanjones, sepals and petals without olive green provided with one large dull brown-purplish patch above middle, within suffused brownish in center with about 8 brown lines on olive background. May 1, 1964, Steyermark 93211; same locality, cumbre de la parte sureste del brazo noroeste (division occidental del cerro) : entre "Drizzly Camp "y"Rio Lomita Camp": faldas secas de piedras "limonita" e igneas con arbustos y drboles esparcidos, 1800-1850 m alt., common on bare granitic slopes. May 5, 1964, Steyermark 93414; same locality, cumbre de la parte norte de la seccion sur (division occidental del cerro) : suelo arenisco entre "Drizzly Camp " y "Second Wall," 1660-1800 m alt., stems 1 m tall, leaves coriaceous, rich green on both sides, petals yellow turning black. May 11, 1964, Steyermark 93711. Amazonas: Cerro Sipapo (Pardque), 1600 m alt., in middle Cafio Negro, occasional terrestrial in boggy savanna, pseudobulb bifoliate, flower greenish with cream-colored lip, January 6, 1949, B. Maguire & L. Politi 28175 (this collection has only two very advanced flowers, so the determination is somewhat uncertain) ; Cerro Duida, 1600 m alt., on upper slopes of Culebra Peak, frequent terrestrial, April 22-24, 1949, B. Maguire & B. Maguire Jr. 29123. BRITISH GUIANA (type).
Distribution:Venezuela South America
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