Ryparosa acuminata Merr.

Species

Angiosperms > Malpighiales > Achariaceae > Ryparosa

Characteristics

Small tree 8-12 m, rarely a shrub 3 m, innovations dark rusty-brown-appressed-hirsute, lenticels whitish, elongate-elliptic, mostly glabrous, clearly visible; branchlets terete, soon glabrous and covered with a thin whitish cork. Leaves oblong, gradually acute-acuminate (1-2 cm), acute at the base, subcoriaceous, upper surface olivaceous, glabrous, shining, lower surface dull, pale, often greyish or yellowish-pruinose when dry, midrib and nerves ± densely to laxly subappressed-hirsute, inter-venium itself glabrous, 12-22 by (3.5-)4-7 cm; midrib slightly raised above, very prominent beneath, nerves suberect, 4-5(-6) on each side, somewhat prominent above, very distinct so beneath, reticulations rather dense and prominent on both sides; petiole first ferrugineous-hirsute, soon glabrescent, 1½-3(-4) cm. ♂ Racemes slender 10-25(-30) cm, the female ones shorter and stouter, all covered with a dark ferrugineous-hirsute tomentum. Pedicels c. 2 mm. ♂ Flowers: calyx light-green or cream, the 3 lobes ovate-elliptic, c. 2.5 mm, appressed ferrugineous hirsute outside. Petals 5, rather membranous, oblong-subacuminate, 2.5 by 1¼ mm; scale ovate, c. 1.2 mm, yellowish-villous. Stamens 5, column glabrous. ♀ Flowers not yet known. Nearly ripe fruit globose, first with a rusty tomentum, which soon peels off, leaving the fruit minutely rugose, glabrous, with white dots; peduncle 2 mm.
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Growth form tree
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Sexuality dioecy
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Mature height (meter) 8.0 - 12.0
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Environment

Dense forests at low altitudes, on Mt Poi (Sarawak) at 1000 m. Fl Sept.-Dec.
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Hardiness (USDA) 9-12

Usage

Uses. Bark said to have the odour of winter-green-oil.
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Cultivation

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Distribution

Ryparosa acuminata world distribution map, present in Brunei Darussalam, Iceland, and Malaysia

Identifiers

LSID urn:lsid:ipni.org:names:365867-1
WFO ID wfo-0000899620
COL ID 78YX9
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Ryparosa acuminata