Monographs Details: Bonnetia tristyla Gleason
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Description:Distribution and Ecology - Distribution. Originally collected on Cerro Duida, this handsome tree has since been found occupying summit and slope areas on Cerro Jaua, Edo. Bolivar, Cerro Yapacana of the Alto Orinoco, and Cerro de la Neblina, over a range of more than 700 kilometers. VENEZUELA. Terr. Amazonas: tree 25-30 ft tall, petals yellow, large, summit along valley forest, between Central Camp and Brocchinia Hills at 1675 m alt, 31 Aug 1944, Cerro Duida, Steyermark 58108 (NY, F); small tree to 6 m, flowers yellow, stigmas 3, protruding on one side of staminal mass, frequent, summit Cerro Yapacana at 1200 m alt, 2 Jan 1951, Maguire, Cowan & Wurdack 30632 (NY, VEN, US); shrub or tree to 5 m, flowers yellow, frequent, cumbre, Cerro Yapacana, 1200 m, 3 Jan 1951, Maguire, Cowan & Wurdack 30665 (NY, VEN, US, F, K, GH); Cerro de la Neblina: bushy tree 6—10 m high, fruiting, south slope at 1500-1700 m alt, 16 Jan 1954, Maguire, Wurdack & Bunting 37323 (NY, US); Canon Grande slopes east of Cumbre Camp at 1600 m alt, 22 Nov 1957, Maguire, Wurdack & Maguire 42179 (NY); shrub 1.5-4 m high, flowers yellow, locally abundant, West Escarpment slopes Canon Grande at 1200-1300 m alt, 25 Nov 1957, Maguire, Wurdack & Maguire 42235 (NY, US, VEN, K, GH); small bushy tree, flowers yellow, rim Canon Grande east of Cumbre Camp, 1800 m alt, 23 Dec 1957, Maguire, Wurdack & Maguire 42460 (NY, US, F); shrub 4 m high, flowers yellow, occasional along precipices, Cano Grande SSW of Cumbre Camp, 1050-1100 m alt, 25 Dec 1957, Maguire, Wurdack & Maguire 42498 (NY, K, VEN). Edo. Bolívar: small tree to 3 m, flowers rich yellow, along rocky stream, at 1900-2100 m alt, Meseta de Jaua, 22-27 Mar 1967, Steyermark 97887 (NY, VEN).
Type. Hillsides and flat ground at Central Camp, 4800 ft, Cerro Duida, Territorio Amazonas, Venezuela, G. H. H. Tate 536 (holotype NY).
Distribution:Venezuela South America