Monographs Details: Psychotria cincta Standl.
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. Colombia and adjacent Venezuela at low elevations. COLOMBIA. El Valle: Km 15, along highway from Buenaventura to Cali, near sea level, 10 Jun 1944, Killip & Cuatrecasas 39029. Santander: vicinity of Barranca Bermeja, near head of Aguas Blancas creek about 25 km south of El Centro, Magdalena Valley, between Sogamoso and Carare rivers, alt 200 m, 19 Nov 1936, Haught 2083. VENEZUELA. Merida: selva pluvial, zona Caño Amaraillo, carretera Panamericana, alt 60 m, 29 Apr 1955, Bernardi 2146. Zulia: forest between Río Tokuko and Río Aricuizá, in Parcela Bonanza, about 80 km south of Machiques, carretera Machiques-Colon, alt 50-100 m, 22 Aug 1967, Steyermark & Jose E. Fernandez 99582.

Discussion:

Type. In forest, Cordoba, Dagua Valley, Dept. El Valle, Colombia, alt 100 m, 6-8 May 1922, Ellsworth P. Killip 5140.

The marginal nerve of the leaf blade is conspicuously developed in this species, and the lateral nerves end at the marginal nerve, and do not anastomose; they are only slightly elevated below.

The type collection is in fruiting stage, and the few remaining hypanthia present are nearly glabrous or glabrate with a ciliate calyx margin. However, a near topotype (.Killip & Cuatrecasas 39029 from Dept. El Valle) has puberulent hypanthia and ciliate calyx margins, as are also shown in the collections of Haught 2083 and in the Venezuelan specimens. The stipular teeth in the type description are stated to be 7-14 mm long, and in the near topotype collection of Killip & Cuatrecasas 39029 attain 14-15 mm in length, but in the Haught 2083 specimen are 7-11 mm. In the Venezuelan collections the stipular teeth are 3.5-7 mm long.

Distribution:Colombia South America| Venezuela South America|