20:89. 1970 O. paupera (Griseb.) Diels Slender vine; older stems lenticellate. Leaves alternate; petioles slender, 3-8.5 cm long; blades ovate to subhastate, obtuse to acuminate and mucronulate at apex, usually shallowly cordate at base (acute on juveniles), 3-10 cm long, 3-8.5 cm wide, glabrous above, with conspicuous glandular areas at base of blades near petiole, pubescent below with short, spreading trichomes especially on veins; venation at base palmate. Inflorescences axillary or supra-axillary, solitary; rachis glabrous or puberulent; staminate inflorescences pseudoracemose, to 22 cm long, with flowers in fascicles of 2-6, occasionally with several short branches; pedicels 3-6 mm long; sepals 6, membranaceous, the outer 3 +/- ovate, to 1.5 mm long and 1 mm wide, the inner 3 +/- oblanceolate, 2-4 mm long, 1.5-2.5 mm wide; petals 6, the outer 3 greenish, somewhat fleshy, bowl-shaped, 2-2.5 mm long, 1.5-2 mm wide, the inner 3 similar but smaller; stamens 6, 1-2 mm long, the filaments connate about half their length; anthers 6, ca 0.5 mm long. Pistillate inflorescences strictly racemose, with 6-12 loosely spaced flowers; pedicels to 1.4 cm in fruit; sepals and petals as in staminate flowers; staminodia 6; ovary glabrous. Fruits of 1-3 drupes, ellipsoid, ca 1 cm long and 7 mm diam, reddish-orange, drying blackish. Croat 5631, 5640. Rare in clearings and occasional in the canopy of the forest. Seasonal behavior uncertain. Known to flower and fruit from May to October.