Monographs Details: Randia hebecarpa Benth.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Rubiaceae
Scientific Name:Randia hebecarpa Benth.
Description:Distribution and Ecology - Distribution. British Guiana, Brazil (Terr. Roraima), Venezuela, and Colombia. BRAZIL. Terr. Roraima: Dormida, foothills of Serra da Lua, 2° 25-29' N, 60° 11-14' W, 15 Jan 1969, Prance, Steward, Ramos & Farias 9304. VENEZUELA. Bolívar: Maripa, Bajo Caura, alt 100 m, 24 Apr 1939, Williams 11939. Anzoategui: cerca de Cantaua, 12 Jun 1941, Pittier 14801; entre El Sombrero y Pariaguan, via Ciudad Bolívar, Jun 1961, Aristeguieta 4679] Cantaura, 17-18 May 1950 and 20 Jun 1952, Foster Smith 173-A, 175, 257. Guarico: Estacion Biologica de Los Llanos, Calabozo, Jun 1960, Aristeguieta 4205] Ortiz-Galeras de El Pao, a unos 20 km de San Francisco de Tiznados, Hato de Tranquero del Dr. H. Garrido, 20 Aug 1966, Aristeguieta, Agostini & Castellano 6285] Estacion Biologica de los Llanos, Calabozo, Aug 1965, Aristeguieta 5646] entre Espina y Parmana, 15 May 1963, Ramia 2807] Mesa de El Sombrero, 18 Apr 1927, Pittier 12373] Estacion Biologica, Calabozo, Apr 1963, Aristeguieta 5030; Estacion Biologica de los Llanos, 31 May 1961, Blydenstein 92. COLOMBIA. Cundinamarca: Nilo, cerca de la Azufrada, alt 400 m, 19 Jul 1961, Murillo & Jaramillo 223.

Discussion:

Basanacantha hebecarpa (Benth.) Hook. f. in Benth. & Hook., Gen. Pl. 2: 82. 1873.

Type. Stony plains, British Guiana, Rob. Schomburgk 775.

This taxon is characterized by the densely villous-hispidulous ovary, solitary staminate flowers with rounded corolla lobes and pilose spreading hairs on the outer surface of the corolla tube and throat, elongate, pubescent, aristate stipules, small elliptic, sessile to subsessile, mucronate, ciliate leaves with the upper surface minutely and densely scabridulous, and the lower surface with spreading hispidulous hairs on the midrib and lateral nerves. The small leaves are produced at the ends of short lateral shoots.

The Colombian specimen cited above (Murillo & Jaramillo 223) differs somewhat from typical R. hebecarpa in having the staminate flowers in two’s instead of solitary, the corolla tube longer (9-10 mm), more uniformly pilosulous or puberulous pubescence on the corolla tube exterior with shorter hairs, the corolla lobes narrower, ovate-oblong and more narrowed toward apex, shorter, more rigid calyx lobes, and leaves more abruptly narrowed at base into a petiolate portion up to 1 mm long.

Distribution:Guyana South America| Brazil South America| Venezuela South America| Colombia South America|