Horsfieldia obscurinervia Merr.

Species

Angiosperms > Magnoliales > Myristicaceae > Horsfieldia

Characteristics

Tree c. 11 m. Twigs 1.5-4 mm diameter, at first with greyish hairs less than 0.1 mm long, glabrescent; bark finely striate, not flaking; lenticels rather distinct. Leaves chartaceous, (oblong-)lanceolate, 5-14 by 2-4 cm, base attenuate, apex acute-acuminate; upper surface drying olivaceous to brown, ± glossy, lower surface early glabrescent; dots absent; midrib flat or slightly raised above; nerves 7-15 pairs, slender, inconspicuous on both surfaces, lines of interarching inconspicuous; venation hardly visible; petiole 6-15 by 1-1.5 mm; leaf bud 6-10 by 1.5-2 mm, with hairs 0.1 mm long or less. Inflorescences subglabrous or with sparse hairs 0.1-0.3 mm long; in male: 2 or 3 times branched, rather few-flowered, 3-4 by 2-3 cm, peduncle 0.5-1 cm; bracts and bracteoles not seen, caducous; female not seen; flowers solitary or 2 or 3 together, glabrous, perianth 2-lobed, pedicel not articulated. Male flowers: pedicel slender, 1 mm long; buds slightly compressed, subobtriangular, 2 by 2.2 mm, apex rounded, base ± cuneate, rather firm, not collapsing on drying, bright brown, cleft c. 1/2, lobes 0.2-0.3 mm thick; androecium ± obtriangular or obovoid, narrowed to the base, slightly laterally compressed, thickish, 1.5 by 1.2 mm, column largely hollow; anthers 11 or 12 (i.e., 11 or 12 thecae on each side), almost completely connate (the free apices 0.1 mm), forming a deep thick-walled cup, the anthers at one side deeply inflexed and almost completely filling the cup (Plate 1: 7); androphore narrow, 0.1 mm long. Female flowers: not seen. Infructescences 2-3 cm long, once or twice branched, with 2-5 fruits. Fruits short-ellipsoid, 1.1-1.3 by 0.9-1.1 cm, glabrescent except for minute dendroid hairs at base (hence ovary pubescent), finely granulate, not tuberculate, drying (reddish) brown; pericarp 1-1.5 mm thick; fruiting pedicel 2-5 mm long; perianth not persistent.
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Growth form tree
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Foliage retention evergreen
Sexuality dioecy
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Hardiness (USDA) 8-12

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Cultivation

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Distribution

Horsfieldia obscurinervia world distribution map, present in Philippines

Conservation status

Horsfieldia obscurinervia threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:585750-1
WFO ID wfo-0000724899
COL ID 3MQC5
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Horsfieldia obscurinervia Horsfieldia ramosii