Gironniera subaequalis Planch. - ULMACEAE

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Botanical descriptions Habitat and ecology Distribution

Botanical descriptions :

Diagnostic characters : Evergreen trees, bark fibrous. Leaves simple, alternate. Stipules intrapetiolar, sheathing falling and leaving a circular scar. Flowers unisexual on the same tree. Fruit a drupe, orange-red when mature and crowned by persistent calyx and 2 styles.
Habit : Evergreen tree up to 20 m. tall, about 25 cm. in DBH. Buttresses present.
Trunk & bark : Trunk cylindrical, bark smooth to finely fissured, grey, inner bark fibrous, ochre-brownish, sapwood pale yellow, lenticellate.
Branches and branchlets or twigs : Twigs terete glabrous. Branchlet with conical terminal bud.
Exudates : Exudate absent.
Leaves : Simple leaves, alternate, elliptic 2-7 x 5-15 cm. in length , apex acuminate, base acute and asymmetric, margin entire at the base but dentate at the middle to tip of leaf, dot like marginal gland. Young leaves brownish, blade glabrous on both side, but hairy on the primary and secondary vein on the lower surface.
Primary vein single, secondary veins oblique, 9-12 pairs, tertiary veins oblique. Petiole 5-10 mm. Long, hairy.
Stipules overlapping and clasping and surrounding terminal bud, leaving a circular scar around the node, hairy.
Inflorescences or flowers : Inflorescence an axillary raceme, up to 6 cm. long, pubescent, pedicel very short about 3 mm. long. Male and female flowers on the same plant, yellowish - green.
Fruits : Fruit solitary drupe, ellipsoid to ovoid, yellowish-green, glabrous, about 0.5 cm. in diameter. Persistent calyx and with two persistent styles on the top.
Seeds : Only one seed.

Habitat and ecology :

In semi evergreen or humid forest from 400 to 600 m. altitude.

Distribution :

Burma (Myanmar), Cambodia, Chine, Malaysian peninsular, Thailand, Vietnam and Laos.

Remark/notes/uses :
The wood is used for furniture and construction purposes. The bark fiber has been used for manufacturing staple rayon, and the leaves are used medicinally.

Specimens studied :
BT 569 and Lao 27 (Herbarium of Faculty of Sciences-NUoL, NHN-Leiden and CIRAD-Montpellier).

Literature :
Kessler P.J.A. (ed.) 2000. Secondary forest trees of Kalimantan, Indonesia. MOFEC Tropenbos Kalimantan Series 3. The Netherlands.

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