Monographs Details: Psychotria paupertina Standl. & Steyerm.
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. Venezuelan Guayana. VENEZUELA. Amazonas: Cerro Sipapo (Paraque), forest between Base Camp and Intermediate Camp, alt 125-600 m, 21 Jan 1949, Maguire & Politi 28480; Williams 15580; Sipapo River, near confluence with left bank of Orinoco River, alt 90 m, 20 Nov 1965, Breteler 4757. Bolívar: bosques entre el Río Paramichi y el Salto de Chalimano, sureste hacia la frontera venezolano-brasilera, noroeste de la Serrania Pia-soi (Pia-shauny, Pia-Savi), lat 4° 52', long 62° 58', alt 525-650 m, 5 Jan 1962, Steyermark 90595; Pica de Veillon, Km 88 al sur de El Dorado, alt 120-140 m, 27 Feb 1959, Bernardi 7296.

Discussion:

Type. In forest near Base River (Cano Negro), at southeastern base of Cerro Duida, Amazonas, Venezuela, alt 215 m, 23 Aug 1944, Julian A. Steyermark 57919.

This species has similarly large leaves and nervation of the next taxon, P. podo-cephala (M.-Arg.) Standl., and is most closely related to it, but differs in having an inflorescence with 5-6 short axes instead of a compact continuous head of flowers, apically bifid or cuspidate instead of merely acute and entire stipules, minutely puberulent instead of glabrous peduncles, smaller corollas and calyx, broadly triangular and acute calyx lobes instead of rounded suborbicular ones, minutely and sparsely puberulent instead of glabrous calyx tube, and generally shorter petioles which are minutely puberulent.

Distribution:Venezuela South America| Guyana South America|