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Taxonomy
Dichostemma glaucescens Pierre
Nomenclature
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Family: EuphorbiaceaeGenus: Dichostemma
SUMMARY
A medium-sized slender tree to 25 m tall, 40 cm diam., with milky juice. Leaves alternate, coriaceous, glabrous, apparently shining above, with or without a glaucous bloom beneath; petiole 6-12 mm long; blade 7-18 cm long, 2.5-6 broad, oblong, elliptic-oblong or slightly obovate-oblong, abruptly to somewhat gradually acuminate into an obtuse linear tail-like point 6–12 mm long at the apex, acutely or roundedly cuneate at the base; midrib impressed above, prominent beneath; primary veins 6–8 on each side of the midrib, connected in a series of broad loops 2–4 mm from the margin, prominent beneath. Panicle terminal 8-40 cm long, pyramidal with numerous branches or corymb-like with few branches, all parts, including the involucres, covered with minute dense and somewhat powder-like but persistent tomentum, or the branches becoming more or less glabrous; branches usually 5–12 cm long, smaller on weak specimens, 2–4 times forked, ascending or ascending-spreading. Bracts falling off before the involucres mature, leaving conspicuous opposite scars, deeply concave-oblong, obtusely rounded at the apex, 2–3 mm long, 2 mm broad. Involucres of a panicle all male or the terminal one of some of the branchlets bisexual, cup-like, obtusely 4-angled, truncate, about 2.5 mm deep and 4– 5 mm. square when fully expanded, green, when dried slightly fulvous or greyish-brown, with the partition-like glands blackish. Male flowers glabrous; perianth 0.5 mm long, cup-like, slightly and irregularly toothed. Female flower erect from the center of the involucre on a stout pedicel 1.5–2 mm long, everywhere covered with minute tomentum like that on the involucre; perianth very shortly cupular, about 1.5 mm long, obtusely 4-angled, truncate, minutely ciliate; ovary obtusely 4-angled; styles 4, stout, recurving over the top of the ovary, channelled on their upper side, emarginate or shortly bifid at the apex. Fruit 1.5– 2 cm long and 2–3 cm in diam., depressed, with 4 obtusely rounded lobes, covered with minute tomentum, brown or dull purple. Seeds ellipsoid or subglobose, 10–12 mm long, 8–10 mm thick, smooth, without a caruncle, brown.