Parashorea chinensis Wang Hsie - DIPTEROCARPACEAE

Synonym : Shorea chinensis (H. C. Wang) H. Zhu
Shorea wangtianshuea Y.K. Yang & J.K. Wu

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Botanical descriptions Habitat and ecology Distribution

Botanical descriptions :

Diagnostic characters : Large evergreen trees with buttresses, bark smooth or slightly fissured. Exudate resinous, yellowish. Leaves simple alternate and distichous, leaf base round, below with stellate hairs. Stipules present. Fruit a winged nut with 5 long wings more or less the same length.
Habit : Evergreen big tree, 40-50 m height and 80-100 cm in diameter. Crown open.
Trunk & bark : Trunk straight, cylindrical with small buttresses at base. Bark grey or brownish-pink, smooth or with slight longitudinal fissures, inner bark slightly aromatic, outer bark green. .
Branches and branchlets or twigs : Twigs terete with stellate hairs.
Exudates : Exudate yellow, resinous.
Leaves : Leaves simple alternate, 6-20 by 2,7-8 cm, elliptic-oblong, shortly caudate at apex.
Midrib raised on both sides, secondary veins obtuse, widely parallel, tertiary veins reticulate.
Inflorescences or flowers : Flowers small and fragrant grouped in terminal or axillary panicles, densely and softly hairy with stellate hairs. Pedicel less than 0.5 cm long.
Fruits : Fruit is a nut, ovoid to ellipsoid, 2.2-2.8 by 1.1-1.5 cm with an acute beak bearing 2 large wings and 3 smaller wings, densely covered with silky hairs.
Seeds : Seed 1.

Habitat and ecology :

In primary and open forests in moist sites up to 1000 m altitude. Flowering period : April - June; fruiting time: July – September.

Distribution :

Southern China (Yunnan), northern Vietnam and Laos (Khammouan).

Remark/notes/uses :
Timber used in light construction and for houses, and house pillars, flooring, plywood, furniture and cabinetwork.

Specimens studied :
BT 245 (Herbarium of Faculty of Sciences-NUoL, NHN-Leiden and CIRAD-Montpellier).

Literature :
Flore du Cambodge, du Laos et du Viêtnam. 1960-2003. Vol. 25. Muséum national d'histoire naturelle, Paris, France.
Dung, Vu Van. 1996. Vietnam Forest Trees. Agriculture Publishing House, Hanoi, Vietnam.
Hoang Van Sam, Khamseng & P.J.A. Keβler. 2004. Trees of Laos and Vietnam: A field guide to 100 economically or ecologically important species. Blumea no 49.
Dipterocarps of Vietnam. 2005. Forest Science Institute of Vietnam. Agricultural Publishing House, Hanoi, Vietnam.

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