Shrub 0.5-1.8 m tall (sometimes arborescent?), the stem unbranched or branched above, stellate-puberulus, soon glabrescent. Leaves rather long-petiolate, the petiole terete, 1-7 cm long, stellate-puberulus, the stipules narrowly oblong-ovate and acute; blade narrowly ovate or narrowly oblong-ovate, rounded to sub-cordate at the base, acute to long-acuminate at the apex, sparingly denticulate to dentate at the margin, 5.5-15 cm long and 1.5-5.5 cm wide, 3-to 5-palminerved, sparsely and minutely stellate-puberulus on both sides, the venation reticulate, prominulous above and prominent beneath. Flowers in elongate, terminal racemes, rather long-pedicellate (at least the lower flowers), the pedicel stout, up to 2 cm long, stellate-tomentellous to stellate-puberulus; epicalyx of 5-8 bractlets, these nearly distinct, narrowly oblong-ovate, acute to acuminate, 7-10 mm long and 1.5-3 mm wide, stellate-puberulus; calyx campanulate, lobed to about the middle, 10-15 mm long, stellate-puberulus, the lobes deltoid-ovate, acute; petals narrowly obovate-spatulate, rounded-truncate at the apex, 20-28 mm long, yellow or greenish-white; staminal tube nearly equalling the corolla, 5-lobulate at the apex, papillate, antheriferous on the upper 1/3, the filaments 4-6 mm long; style slightly longer than the staminal tube, the stigmas discoid. Mericarps triquetrous-suboibovoid with a single, stout, triangular, apical cusp ca 3 mm long, sometimes also with 2 pro-minulous apical and distal crests, strongly longitudinally carinate, the keel ex-tending to the base of the cusp, and rather obscurely rugulose-reticulate dorsally, the body up to 9 mm long, coriaceous, glabrous; seeds reniform, ca 5 mm long, very minutely papillate.
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