Volume 7 > Part 3 > Year 2001 > Page 604 > Sterculiaceae > Pterospermum

3. Pterospermum diversifolium Blumewfo-0000476043

Bijdr.: 88. 1825; Mast. in Fl. Brit. Ind. 1: 367. 1874; Gagnep. in Fl. Gén. I.-C. 1: 500. 1911; Ridl., Fl. Malay Penins. 1: 282. 1922; Craib in Fl. Siam. Enum. 1: 176. 1925. Fig. 93.

Accepted Name : This is currently accepted.

Description : Tree, 8–30 m high; crown with low branches; twigs slender densely hairy. Leaves obovate, ovate, ovate-oblong to elliptic, 15–30 x 10–17 cm, apex acute to broadly acute, base cordate to slightly oblique, margin entire, hairy then glabrescent on both surfaces; nerves and veins finely distinct on both surfaces. Flowers buds tubular, 2–5 x 0.6–1 cm, surrounded by 3 caducous lanceolate bracts. Sepals 5, lanceolate, 8–17 x 0.5–0.8 cm, free or nearly so, hairy on both surfaces. Petals 5, white, oblanceolate, 7–14 x 0.7–1 cm, free, hairy on outer surface. Stamens 15, 4–6 cm long; staminodes 5, 4–8 cm long, pellucid glands. Ovary ovoid, ca 10 x 4 mm, hairy; 5-locules, each with many ovules; styles slender, 3–4 cm long, densely hairy on lower half; stigmas 5, twisted. Fruits woody, oblong, 10–20 x 5.5–9 cm, with 5 straight longitudinal angles, hairy then glabrescent. Seeds many, ovate with a thin wing, 2–5 x 1 cm.

Thailand : CENTRAL: Saraburi, Nakhon Nayok; SOUTH-EASTERN: Chon Buri, Chanthaburi; PENINSULAR: Surat Thani, Trang, Narathiwat.

Distribution : India, Malay Peninsula, Indonesia (type), Vietnam.

Ecology : In evergreen forests and old clearing, 50–800 m alt. Flowering: February–April; fruiting: March–May. Fruits persistent all year.

Vernacular : Champa thet (จำปาเทศ), sala pang (สาละป้าง), salak ka phat (สลักกะพาด)(Central); khanan (ขนาน), lam pang (ลำป้าง), lok pang (ลกป้าง), lueang na (เหลืองนา)(Southeastern); ba yo (บาโย), champi khaek (จำปีแขก), lo (ล่อ), mayo (มะโย), payu (ปายู), yu (ยู)(Peninsular).

Uses: Timber for interior construction and fuelwood.