Dipterocarpus sublamellatus

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Dipterocarpus sublamellatus

Description

Leaf bud and stipule outside (glabrous within) densely long pale fulvous hirsute, rarely glabrous, leaf nervation beneath sparsely caducously so, otherwise glabrous. Leaves 5-15 by 3.5-8 cm, ovate to elliptic (immature), coriaceous persistently prominently plicate; Stipule to 40 by 8 mm, lorate, acute. Inflorescence unknown. Stamens c. 24, as long as style at anthesis; Ovary ovoid, pubescent;

Distribution

Asia-Tropical: Borneo present (Sarawak present); Malaya present; Sumatera (Sumatera present), Indragiri present, Nunukan present, Sebatik island present, Sibolga present, Tapanuli present, west of the R. Suai present
Malesia: Malaya, Sumatra (Sibolga, Tapanuli, Indragiri), Borneo (Sarawak, west of the R. Suai in W.; Sebatik island and Nunukan in N.E.).

Notes

Collections from N.E. Borneo, and one from Central Sarawak (S 18428) have somewhat larger parts, especially fruit, and less undulate calyx tube wings.
Closely related to D. insignis Thw. of Ceylon.

Citation

Sym. 1943: p. 92. – In: Mal. For. Rec. f. 85
Ashton 1968: Man. Dipt. Brun: 17. f. 3
Meijer & Wood 1964 – In: Sabah For. Rec. p 269
Sloot. 1941: p. 108. – In: Bull. Bot. Gard. Btzg. f. 15