Dacrydium pectinatum De Laub.

Species

Gymnosperms > Cupressales > Podocarpaceae > Dacrydium

Characteristics

Trees to 30 m tall; trunk to 3 m d.b.h.; bark grayish white or pale brown when young, finally gray-brown or red-brown, shallowly fissured; main branches whorled; branchlets drooping, green. Juvenile leaves changing gradually to adult state, needlelike, falcately curved forward, 1.5-2 cm × ca. 0.4 mm, apex tapered. Adult leaves dull green, scalelike, "S"-shaped-linear, 4-angled, 2-5 × 0.4-0.6 mm, stomatal rows (2 or)3-5 per surface, with remote, indistinct, stomatal dots, base decurrent, apex obliquely apiculate or obtuse and incurved. Pollen cones in clusters of 1-3, cylindric-ovoid, 0.8-1.2 cm × 1.5-2 mm; microsporophylls ovate, ca. 1 × 1 mm, centrally keeled, apex subacute. Seed-bearing structures sessile; bracts oblique, not fleshy. Epimatium red and fleshy when ripe. Seed ovoid, 4.5-5 × ca. 3 mm. Pollination Mar-May, seed maturity (Jun-) Oct-Nov.
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Small to large tree, 3 to 40 m tall, with numerous branchlets forming a dense rounded crown. Juvenile leaves up to 18 mm long, slightly curved, pungent, strongly keeled and quadrangular in cross section, 0.2 mm wide and thick, gradually becoming shorter and thicker. Adult leaves keeled on four sides but less strongly on the axial side, abruptly acute to blunt, slightly curved, 2-5 by 0.4-0.8 mm wide and thick. Fertile structures terminal. Pollen cone 6-12 mm long and 2 mm diam., apex of microsporophyll 1-1.2 mm long. The seed-bearing structure subtended by a short zone of small leaves c. 2 mm long while the cone bracts themselves may be up to 3 mm long. Seed 4-4.5 mm long.
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Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination anemogamy
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Mature height (meter) 27.5
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Root diameter (meter) 0.6
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Environment

Scattered large individuals are found in primary rain-forest other than dipterocarp forest from sea-level to 1500 m but mostly below 600 m, while dense stands are found in boggy areas and nearly pure stands of stunted trees occur in shallow sandy soils, especially on so-called 'padangs', and on ke-rangas in heath forest, frequently associated with Gymnostoma; in Sabah also on ultrabasic soils. In Kayangeran For. Res. (Brunei) reported to occur in pure stands in the centre of peat swamps.
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Scattered in lowland to montane rainforests, forming more dense to pure stands on nutrient-poor soils like shallow, leached sands, or in swamps with peat formation above the water table; at elevations to 800 metres, occasionally to 1,500 metres.
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Hardiness (USDA) 8-12

Usage

Uses timber wood
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Cultivation

Can be grown by cuttings or seedlings.
Mode cuttings seedlings
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Distribution

Dacrydium pectinatum world distribution map, present in China, Philippines, and Sierra Leone

Conservation status

Dacrydium pectinatum threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:687961-1
WFO ID wfo-0000636693
COL ID 6C9C2
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Dacrydium pectinatum Corneria pectinata Dacrydium pectinatum var. robustum