Glabrous. Leaves usually quaternate, rarely decussate; lamina narrowly obovate to elliptic, mostly 4-10 cm long, mostly 2-5 cm wide, attenuate at the base to a petiole mostly 4-12 mm long, rounded to obtuse at the apex, dull on both sides; venation pinnate with the midrib raised in the basal part and otherwise obscure. Inflorescencess many at the nodes and along the internodes and epicortical runners, sessile 1-to 3-(usually 2-) flowered umbels; pedicels (0.5-)2-4 mm long. Corolla in mature bud 5-or 6-merous, 13-22 mm long, usually slightly inflated at the base, rounded at the apex, mostly red, orange or yellow below and green above, sometimes with a purple zone at the tip. Anther 2-5 mm long, sessile or much longer than the free part of the filament. Fig. 4. Fig. 9g, h.
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