Pellacalyx axillaris Korth. - RHIZOPHORACEAE

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Botanical descriptions Habitat and ecology Distribution

Botanical descriptions :

Habit : Deciduous tree up to 8 m. tall, up to 17 cm. in diameter, branches hollow.
Trunk & bark : Trunk smooth. Bark light greyish-brown, outer bark thin 1 mm. thick, white, inner bark light red about 1 cm. thick, sapwood white.
Branches and branchlets or twigs : Young branchlets with stipular scars at the node, orange red pubescent.
Exudates : Waxy.
Leaves : Leaves simple on the end of branches, opposite, ovoid, oblong or elliptic 3-7 x 7-16 cm. in length, apex acute to acuminate, base acute, margin entire at the base but from middle to tip dentate, young leaves brownish, blade coriaceous and glabrous.
Midrib flat above, prominent below, primary vein single, secondary veins oblique up to 5 pairs, tertiary veins indistinct. Stipule subulate, embracing two leaves at the branch tip, leaving a brown scare ring when falling down.
Inflorescences or flowers : Inflorescence fascicled or in branched glomerules, bractiolate. Flowers clustered in axillary cymes 3-5, sessile; petals dark red at the base, green at the top, fringed, stamen 5, reflexed when old.
Fruits : Fruit solitary berry, globose, glabrous. 5-6 mm in diameter, calyx persistent.
Seeds : Seeds many.

Habitat and ecology :

In pine forest, evergreen forest or open degraded forests from 200 to 500 m. altitude.

Distribution :

Burma (Myanmar), Indonesia (Sumatra, Borneo), Malay peninsula, Philippines, Thailand, Vietnam and Laos.

Remark/notes/uses :
The wood is used for light construction work and as fire-wood.

Specimens studied :
BT 220 and BT 232 (Herbarium of Faculty of Sciences-NUoL, NHN-Leiden and CIRAD-Montpellier).

Literature :
Flora of Thailand. 1970-2002. Vol. 2, part 1. Forest Herbarium, Royal Forest Department, Bangkok, Thailand.

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