Horsfieldia atjehensis W.j.de Wilde

Species

Angiosperms > Magnoliales > Myristicaceae > Horsfieldia

Characteristics

Tree c. 10 m. Twigs terete, 3.5-5(-8) mm diameter, pale grey to yellowish brown, early glabrescent, with grey-brown hairs less than 0.1 mm; bark coarsely striate and tending to flake; lenticels rather conspicuous towards the apex of the twig. Leaves in 3-5 rows, thinly chartaceous, obovate-oblong to oblong-lanceolate, 13-25 by 4.5-9 cm, base long-attenuate, apex acute-acuminate; upper surface drying dark brown, lower surface early glabrescent, with scattered dots (lens!); midrib flat above; nerves 10-12 pairs, flat above, lines of interarching indistinct; venation lax, indistinct or invisible on both surfaces; petiole 12-15 by 2.5-3.5 mm; leaf bud 15 by 3.5-4 mm, with dense grey-brown hairs less than 0.1 mm. Inflorescences (female not seen) behind the leaves, glabrescent, or thinly haired, less than 0.1 mm; in male about 3 times branched, rather many-flowered, 7-14 by 4-10 cm, peduncle 1-2 cm long; bracts elliptic-oblong, 2-4 mm, finely pubescent, caducous; flowers in male in loose clusters of 4-8 each, glabrous, perianth 3-lobed, pedicel not articulated. Male flowers (± immature): pedicel slender, 1-1.5 mm long; buds globose, 1.5 mm diameter, cleft c. 1/2, lobes 0.2(—0.3) mm thick; androecium subglobose to short-ellipsoid, 1.2 by 1 mm, apex broadly rounded, in cross section sub-circular (Plate 2: 41); thecae 22, almost completely sessile, free apices 0.1 (-0.2) mm, curved over and more or less into the rather narrow apical cavity 0.3 mm deep; column broad, androphore narrow, 0.2(-0.3) mm long. Female flowers and fruits not seen.
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Foliage retention evergreen
Sexuality dioecy
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Cultivation

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Distribution

Horsfieldia atjehensis world distribution map, present in Indonesia

Conservation status

Horsfieldia atjehensis threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:929015-1
WFO ID wfo-0000724815
COL ID 6MDDF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Horsfieldia atjehensis