Anisoptera grossivenia Slooten

Species

Angiosperms > Malvales > Dipterocarpaceae > Anisoptera

Characteristics

Leaf nervation beneath, petiole, stipule (outside, shortly pubescent within), leaf bud, panicle and twigs persistently rufous scabrid tomentose; lamina beneath densely rich golden-yellow lepidote. Twig to 2 mm ø apically, terete or +-compressed, rugose when dry, becoming minutely striated. Bud 3-5 by 2.5 mm, ovoid, ± compressed. Stipule c. 8 by 2.5 mm, hastate, acute, fugaceous. Leaves 9-12 by 3-5 cm, oblong to narrowly obovate, slightly bullate; base cuneate; margin slightly recurved; acumen to 1 cm long, narrow; nerves 18-28 pairs, dense, arched, at 60°-70°; tertiary nerves conspicuous, semi-reticulate; looped intramarginal nerve c. 1 mm from margin; petiole 2-2.5 cm long, geniculate. Panicle to 20 cm long, terminal or axillary; slender, lax, pendent, angular; regularly doubly branched, branchlets lax, to 5 cm long, bearing up to 8 flowers; bracteoles fugaceous. Bud to 5 by 2.5 mm, lanceolate, acute. Calyx densely rust-brown tomentose, cupped at the base; sepals imbricate, acuminate; 2 inner sepals slightly longer, broader, obtuse; 3 outer acute. Corolla magenta at first, becoming rich yellow on opening; petals lanceolate, acute, shortly pubescent on parts exposed in bud. Stamens c. 36; filaments slender, short; anthers subglobose; appendage to connective c. 3 x length of anther, reaching 3/4 height of stylopodium, slender. Ovary half enclosed in calyx; stylopodium subcylin-drical, tapering apically, densely shortly gold-brown tomentose; style short, glabrous; stigma minute. Fruit calyx sparsely puberulent; tube to 1.3 cm ø, globose, hardly constricted at the neck; two longer calyx lobes to 20 by 2.5 cm, narrowly spatulate, obtuse, rarely acute, to 5 mm broad at base; 3 shorter lobes of varying length, occasionally to 6 by 0.4 cm, acute, linear. Nut apex obtuse, with c. 8 mm long, c. 15 mm ø, acute oblong-ovoid stylopodium broadening into the nut at the base; shortly densely rufous pubescent.
Life form -
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
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Photosynthetic pathway c3

Environment

Lowland Dipterocarp forest on sandy soil, on present or Pleistocene coastal hills.
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Hardiness (USDA) 10-12

Usage

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Edible -
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Cultivation

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Distribution

Anisoptera grossivenia world distribution map, present in Brunei Darussalam, Indonesia, and Malaysia

Conservation status

Anisoptera grossivenia threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:320552-1
WFO ID wfo-0000537353
COL ID 5V2YN
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Anisoptera grossivenia