Monographs Details: Aphanocarpus steyermarkii (Standl.) Steyerm.
Authority: Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
Family:Rubiaceae
Description:Distribution and Ecology - Distribution. Known only from sandstone table mountains at alt. 2000-2500 m, in Estado Bolivar, southeastern Venezuela. VENEZUELA. Ptari-tepui, Steyermark 59744 (holotype), 5.9770 (paratype); Carrao-tepui, Steyermark 60899 (paratype) ; east-central portion of summit of Apacara-tepui, Chimanta Massif, Steyermark 75900, 75901; upper part of upper cumbre, northwest cumbres, Churi-tepui (Muru-tepuI), Chimanta Massif, Wurdack 34302, 34173; Chimantatepui, Chimanta Massif, Steyermark ds Wurdack 663; Auyan-tepui, Vareschi do Foldais 4965.

Discussion:Pagamea steyermarkii Standi. Fieldiana Bot. 28: 589. fig. 131. 1953 Although the illustration accompanying the original description shows a twocelled ovary with a single ovule arising at the base of each cell, subsequent dissections have revealed only a one-celled ovary with a single ovule. At the time of the original description no fruiting specimen was available. Fruiting specimens have now been examined from the following: Vareschi d Foldats 4965, Steyermark d Wurdack 663, Wurdack 34302. Since the fruit and seed have not previously been described, the following description is given herewith: Fruetus 1.5-2 mm longus 1 mm latus, loculo chartaceo nitido; semine 1 subtrigono obovoideo extremitatibus rotundatis obtusisque 1.25-1.5 mm longis 0.75-1 mm latis stramineis, superficie tenuiter leviterque cellulari-punctulatis.
Distribution:Venezuela South America|