Hopea dasyrrhachis Slooten

Species

Angiosperms > Malvales > Dipterocarpaceae > Hopea

Characteristics

Large, dark flaky-barked tree. Twig apices, ovary apex and calyx caducous buff puberulent, panicles and parts of corolla exposed in bud persistently densely so. Twig c. 2 mm ø, terete; stipule scars short, obscure. Bud 1 by 1 mm, minute. Stipule fugaceous. Leaves 7-15 by 2.5-8 cm, ovate-falcate, somewhat coriaceous, base cuneate; acumen to 1.5 cm long; nerves 12-14 pairs, slender, arched, at 50°-60°; typically with prominent glabrous pore-like axillary domatia; tertiary nerves slender, scalariform; midrib raised on both surfaces; petiole 5-15 mm long. Panicle to 8.5 cm long, terete, singly branched, branchlets bearing to 10 secund flowers. Flower bud to 2 mm long, ovoid. 3 outer calyx lobes ovate, subacute, 2 inner suborbicular, villous on parts exposed in bud. Petals pubescent on parts exposed in bud, cream. Stamens 10, in a single verticil; filaments compressed at base, tapering abruptly medially, filiform at the base of the oblong anthers; appendage to connective filiform, as long as anther. Ovary and stylopodium subcylindrical, sericeous in the distal half, terminating in a short truncate style. Fruit pedicel to 3 mm long, slender. 2 longer fruit calyx lobes to 4 by 3.5 cm, suborbicular, chartaceous, frequently subauriculate with to 4 by 3 mm small thickened area at base; 3 shorter lobes to 6 by 7 mm, suborbicular, saccate. Nut to 15 by 15 mm, ovoid, shortly apiculate.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
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Photosynthetic pathway c3

Environment

River banks. Locally abundant on limestone slopes.
More
On river banks in W. and S. Borneo.
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Usage

Uses timber wood
Edible -
Therapeutic use -
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Cultivation

Can be grown by seedlings.
Mode seedlings
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Distribution

Hopea dasyrrhachis world distribution map, present in Anguilla and Somalia

Conservation status

Hopea dasyrrhachis threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:320872-1
WFO ID wfo-0000724514
COL ID 3MJDC
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Shorea dasyrrhachis Hopea dasyrrhachis