Glabrous except for the inflorescence and usually the flowers sparsely to densely brown or yellow-brown tomentose. Leaves opposite; lamina broadly obovate to nearly orbicular, mostly 4-10 cm long, mostly 3.5-6 cm wide, shortly cuneate at the base to a petiole 5-10 mm long, rounded at the apex, dull on both sides; venation pinnate but somewhat curvinerved with the midrib and the main laterals visible on both sides. Inflorescences at the nodes, pedunculate 7-to 12-rayed umbels of triads with the central flowers sessile; peduncle 15-30 mm long, robust, dilated at the apex; rays 6-13 mm long; pedicels of the lateral flowers 2-4 mm long. Corolla in mature bud 5-or 6-merous, 20-40 mm long, moderately robust, acute to truncate at the apex, mostly orange to red below and often grading to yellow above. Anther 3-5 mm long, about equal to the free part of the filament. Fig. 3d. Fig. 7.
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