Macrosolen robinsonii Danser

Glabrous. Leaves opposite; lamina narrowly ovate to ovate, 5-8(-12) by (l-)2-3.5 (-5) cm, cuneate at the base to a petiole 1—5(—10) mm long, acuminate and acute at the apex, glossy and sometimes red above, dull below; venation pinnate with the midrib and the main laterals distinct above and the midrib prominent and the main laterals visible below. Inflorescences at the nodes, an umbellate raceme of 1 or 2 opposite pairs of flowers; axis 1-5 mm long, usually subtended at the base by a few very small acute bracts; pedicels 1-2.5 mm long, bracts c. 1 mm long, the lateral ones partly connate. Corolla in mature bud 6-merous, 15-25(-30) mm long, somewhat inflated at the base, cylindric and weakly angular below a distinct neck, clavate and obtuse at the apex, pink or red; tube in the open flower 10-16 mm long with the lobes reflexed or twisted slightly higher. Anther 1.5-2 mm long, bluntly acute, about two fifths as long as the free part of the filament.