Pterospermum reticulatum Wt. & Arn. - STERCULIACEAE


Vernacular names : Malayalam: Malayuram, Malavurum

English   Kannada   Tamil   

Botanical descriptions Ecology Distribution status Literature

Botanical descriptions :

Habit : Trees up to 20 m tall.
Trunk\bark : Bark greyish brown with longitudinally arraned lenticels; blaze red.
Branchlets : Young branchlets slender, terete, densely white tomentose and stellate hairy.
Leaves : Leaves simple, alternate, distichous; stipule lateral, caducous; petiole ca. 0.7 cm long, terete, stellate tomentose when young, later glabrous; lamina 5-14.5 x 2.5-7.5 cm, oblong, obovate or pandurate and irregularly toothed or lobed towards apex, apex acuminate, base asymmetric to cordate to obtuse, margin entire, white tomentose and stellate hairy beneath, coriaceous; 3-5-nerved at base; midrib canaliculate above; secondary_nerves 5-6 pairs, prominent beneath; tertiary_nerves strong and obliquely percurrent.
Flowers : Flowers white, in terminal or axillary fascicles, solitary; bracteoles laciniate; pedicel 0.3 cm long.
Fruit& seed : Capsule, brown, 5-angled and 5-valved, stellately pubescent; seeds 4 in each cell, winged at one end.

Ecology :

Subcanopy trees in evergreen forests up to 1000 m.

Distribution :

Endemic to the Western_Ghats- South and Central Sahyadris.

status :

Rare & Threatened (Ahmedullah & Nayar, 1986); Rare (Nayar & Sastry 1990); Vulnerable (IUCN, 2000).

Literature :

Wt. & Arn., Prodr. 69. 1834; Gamble, Fl. Madras 1: 108. 1997 (re. ed); Sasidharan, Biodiversity documentation for Kerala- Flowering Plants, part 6: 58. 2004; Saldanha, Fl. Karnataka 1: 235.1984; Cook, Fl. Bombay 1: 130. 1903.

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