Glabrous. Leaves quaternate; lamina lanceolate-oblong, mostly 3-6 cm long, 1-3 cm wide, cuneate at the base to a petiole 3-10 mm long, shortly acuminate and acute or obtuse at the apex, dull on both sides but darker above; venation pinnate with the midrib raised below and other veins indistinct. Inflorescencess at the nodes, pedunculate 4-rayed umbels of triads with all flowers pedicellate or the central flower sessile; peduncle 10-15 mm long; rays 5-7 mm long; pedicels of the central flowers very short or obscure; pedicels of the lateral flowers 1-1.5 mm long. Corolla in mature bud 4-merous, 13-14 mm long, slender, clavate and truncate at the apex, with a corona formed from spreading, bilobed dorsal appendages up to 1.2 mm long, pink or red, sometimes grading to yellow above. Anther 1-1.5 mm long, about one third as long as the free part of the filament.
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