Volume 13 > Part 4 > Year 2017 > Page 643 > Dipterocarpaceae > Shorea

12. Shorea laevis Ridl.wfo-0000500612

Fl. Malay Penins. 1: 232. 1922; Smitinand, Santisuk & Phengklai, Thai Forest Bull., Bot. 12: 65. 1980; P.S.Ashton, Fl. Males., Ser. 1, Spermat. 9: 461. 1982; Pooma & M.F.Newman, Thai Forest Bull., Bot. 29: 164. 2001; Symington, P.S.Ashton & S.Appanah, Malayan Forest Rec. 16: 104. 2004. Plate LXII: 4.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Tree, 25–45 m tall, buttressed; bark scaly. Indumentum shortly fine puberulent on buds, stipules and young twigs; and shortly fine greyish tufted tomentose on inflorescences and flower buds. Twigs glabrous to glabescent. Buds lanceolate, ca 5 mm long. Stipules lanceolate, ca 0.6–1 by 0.1 cm. Leaves narrowly ovate-oblong to ovate-lanceolate, falcate, slightly asymmetrical, 4–10 by 2–4 cm, thinly coriaceous, glabrous or with cream scurfy scales on lower surface; base cuneate to rounded; apex acuminate, tapering to 2 cm long; midrib slightly raised on both surfaces; secondary nerves 8–14 on each side; domatia absent; intermediatnervespresent; tertiarynervesdensely scalariform, hardlyvisible; petioles 1.5–2 cm long. Inflorescences doubly branched, 2–9 cm long; branchlets 1–2 cm long, bearing 2–5 flowers; flower buds subglobose to ovoid, 3–5 mm long; pedicels 0.5–1 mm long. Calyx lobes broadly ovate, 1.5–2 by 1.5–2 mm, pubescent. Petals broadly oblong, 6–7 by 2.5–3 mm, white. Stamens 20–60, in several whorls; filaments ca twice as long as anthers; anthers with 4 pollen sacs, oblong, ca 0.5 mm long, barbate; connective-appendages short, slightly or hardly exceeding the anthers, densely bristly. Ovary and stylopodium conical, ca 1.5 by 1.5 mm, tapering to style, ca equal to ovary length, tomentose; stigma obscurely trifid. Fruiting calyx lobes wing-like, saccate at base, obscurely thickened, enclosing more than half of the nut, pale green when young, sparsely puberulent; 3 longer lobes 5–5.5 by 0.6–0.8 cm; 2 shorter lobes 2.5–3 by 0.2–0.3 cm; fruit pedicels stout, ca 1 mm long. Nut ovoid, ca 1 by 0.8 cm, pubescent; style remnant to ca 4 mm long, slightly blended.

Thailand : PENINSULAR: Chumphon (Lang Suan), Ranong.

Distribution : Myanmar (Tavoy), Peninsular Malaysia (type), Sumatra, Borneo.

Ecology : Evergreen forests, hillsides to ridges, to 400 m alt. Flowering: December–January; fruiting: February–October.

Vernacular : Teng khuan (เต็งควน)(Chumphon).