Monographs Details: Chiococca nitida var. amazonica Müll.Arg.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Rubiaceae
Description:Distribution and Ecology - Distribution. British Guiana, Venezuela, and Brazil. BRITISH GUIANA. Roraima, 1842-43, Schomburgk 719] Wabuwak, Kanuku Mts., alt 600 m, Nov 1948, Wilson-Browne 469A. VENEZUELA. Bolívar: dwarf forest on ridge top, between camp and Agua Linda, 7 km E of Hato de Nuria, E of Miamo, Altiplanicie de Nuria, alt 400 m, 14 Jan 1961, Steyermark 88457] border of savanna between Los Castillos de Guayana and Piacoa, 5 Jun 1960, Steyermark 86268] vicinity of Salto de Pacairao bordering Río Pacairao, about 3 km ENE of Santa Teresita de Kavanayen, alt 1220 m, 24 Nov 1944, Steyermark 60510. BRAZIL. Pará: Ilha do Mosqueiro, near Pará, 3-9 Nov 1929, Killip & Smith 30437.

Discussion:

Type. Caripi, juxta Pará, Brazil, Aug 1849, Spruce s n.

In this variety the corollas are shorter than in var nitida and var chimantensis, and the base of the leaf blade is obtuse to rounded and in an extreme development subcordate to cordate.

The specimen of Wilson-Browne 469A, cited above, is identical with other material of var amazonica. Although most of the flowers of this collection are tetramerous, others were found to be pentamerous.

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