Trigonachras acuta Radlk.

Species

Angiosperms > Sapindales > Sapindaceae > Trigonachras

Characteristics

Tree up to 25 m high, dbh up to 50 cm; with buttresses. Twigs subterete, when young ± angular, 3-6 mm diam., grey to black, brown tomentel-lous, labrescent. Leaves 3-8-jugate; petiole sub-terete to terete, 1.5-6 cm long by 1-2 mm broad; petiolules subterete to grooved above, 3-6 mm long. Leaflets opposite to alternate, ovate to elliptic, 4.5-12 by 1.5-4 cm, index 2.25-4.5, slightly falcate, thin-to rather stiff-pergamentaceous, glabrous or with some appressed hairs on the lower side of the midrib with small glands in the nerve axils beneath; base symmetrical to oblique, narrower at the basi-scopic side, obtuse to acute (or rounded), slightly attenuate; apex usually tapering into an acute acumen (or acute to obtuse); nerves 0.5-1.5 cm apart, spreading, strongly curved, ending free; reticulation fairly coarse, equally raised on both sides. Inflorescences pseudoterminal (and terminal), 10-20 cm long, without or with a few long branches, usually few-flowered, fulvous-puberulous. Sepals broad-ovate, 1.3-1.75 by 1.25-1.75 mm, fairly densely short sericeous on both sides to rather sparse inside, margin ciliate. Petals 2-3 by 1.6-2.5 mm; (claw with a few hairs outside); blade orbicular, glabrous, inside with 2 scales somewhat more than half as long as the petal. Stamens 7 or 8; filaments up to 5.5 mm long, fairly densely patently long hairy except for the upper fourth; anthers c. 1 mm long, glabrous. Pistil 3-(or 4-)locu-lar, shortly brown-hairy; ovary slightly trigonous, tapering into the at least equally long style; stigma grooved. Fruits ± triangular-clavate, apiculate, 4.5-5 by 2.25-3 cm, brown tomentellous, red when fresh; wall c. 1 mm thick, hard, thick and fleshy when fresh, endocarp wrinkled, sparsely to densely woolly. Seeds c. 1.5 by 1 cm, black and shiny; hilum basal, transversely elliptic, c. 7 by 5 mm.
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Sexuality monoecy
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Mature height (meter) 25.0
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Hardiness (USDA) 10-12

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Cultivation

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Distribution

Trigonachras acuta world distribution map, present in Indonesia, Iceland, Malaysia, and Singapore

Identifiers

LSID urn:lsid:ipni.org:names:785510-1
WFO ID wfo-0000459217
COL ID 58R2H
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Trigonachras acuta Cupania acuta