Horsfieldia urceolata W.j.de Wilde

Species

Angiosperms > Magnoliales > Myristicaceae > Horsfieldia

Characteristics

Shrub or treelet, 1-5 m. Twigs 1.5 mm diameter, with dark rusty-brown hairs (0.2-) 0.3 mm, glabrescent; bark finely striate, neither cracked nor flaking; without or with few inconspicuous lenticels. Leaves membranous, oblong to lanceolate, 6-18 by 1.5-7 cm, base attenuate to nearly rounded, apex acute-acuminate; blade above glabrous, drying dark brown above, beneath somewhat paler, glabrescent with some scattered scaly-stellate hairs remaining for some time; dots absent; midrib very slender, raised above; nerves 12-15 pairs, sunken above, lines of interarching ± distinct; venation lax, distinct beneath; petiole 6-10 by 1-2 mm; leaf bud 7 by 1.5 mm, with dense rusty woolly hairs 0.2-0.3 mm. Inflorescences (male) among the leaves, with dense rusty hairs (0.2-)0.3 mm, small, twice branched, the lowest branch 2-3 mm from the base, rather few-flowered; in male: 2-3 by 2 cm, with few branches; in female (from infructescences, see note 2): few-flowered, 2.5 cm long; bracts oblong-lanceolate, 1.5-2 mm, pubescent, caducous; flowers solitary or 2 or 3 together, perianth 2-lobed, at base with hairs 0.2-0.3 mm (the remainder of the perianth early glabrescent), drying dark brown or blackish, pedicel pubescent, slender, not articulated. Male flowers: pedicel 1.5-3 mm long; buds subglobose or broadly ovoid, 2.5-3 mm diameter, cleft l/6(—1/8), lobes (perianth) 1-1.5 mm, at apex 0.2 mm thick; androecium club-shaped, 1.5-2 by 0.6-0.7 mm, the anther-bearing apex ± acute (Plate 1:16); thecae 8, sessile, 0.3-0.4 mm long, not or hardly projecting, column solid; androphore glabrous, with scattered tannin-dots, not or but indistinctly warty. Female flowers not seen. Fruits (doubtful, see note 2) 2 or 3 per infructescence, drying dark brown to blackish, subglobose (to broadly ellipsoid), including the minute, slender, bifid, 1 mm long rostrum (persistent style and stigmas) 1 cm long, pseudostalk 1.5-2 mm; all thinly pubescent, hairs 0.1-0.2 mm; pericarp 0.5 mm thick; fruiting pedicel slender, 7-8 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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Mature height (meter) 1.0 - 5.0
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Hardiness (USDA) 9-12

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Cultivation

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Distribution

Horsfieldia urceolata world distribution map, present in Sri Lanka and Papua New Guinea

Conservation status

Horsfieldia urceolata threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:933072-1
WFO ID wfo-0000724977
COL ID 6MDGV
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Horsfieldia urceolata