Shorea stenoptera

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Shorea stenoptera

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Description

Small tree. Twig apex, petiole and midrib above sometimes densely ocherous pubescent (immature tree?), more commonly glabrous; Leaves 18-40 by 8-22 cm, large, oblong, thickly coriaceous; Stipule to 2 by 1 cm, ovate, deltoid, obtuse, subauriculate at base, subpersistent. Sepals deltoid, acute, densely pubescent outside, sparsely so within; Petals deep pink, lanceolate, sparsely pubescent on parts exposed in bud. Stamens 15, the inner 5 somewhat longer than the others and exceeding the style apex; Panicle to 35 cm long, terminal or axillary, glabrous or (rarely) sparsely pubescent towards the base; Ovary narrowly ovoid, glabrous;

Distribution

Asia-Tropical: Borneo present, Kapuas valley present, Muara Tewe present, Sarawak west of the Saribas present
Malesia: Borneo (Kapuas valley, Sarawak west of the Saribas; Muara Tewe, planted?).

Notes

A remarkably variable species. Sometimes a big tree, when it may differ from S. macrophylla only in the glabrous midrib and could be a hybrid. Usually small, but even then differing greatly between provenances; in West Sarawak the inflorescences are always axillary, born in groups between short internodes and subtended by modified or no leaves.
Some cultivated plants at Kepong flower almost annually, while one of the provenances planted at Haurbentes in West Java flowers almost continuously; it is said that the wild parents of the latter also did so.

Citation

Heyne 1917 – In: Nutt. Pl., ed. 1. p 308
Merr. 1921: En. Born. p 407
Gilg 1925 – In: E. & P., Pfl. Fam., ed. 2, 21. p 260
Brandis & Gilg 1895 – In: E. & P., Pfl. Fam., ed. 1, 3. p 264
Burck 1887: p. 209. – In: Ann. Jard. Bot. Btzg. t. 21
Brandis 1895 – In: J. Linn. Soc. Bot. p 78
Browne 1955: For. Trees Sarawak & Brunei. p 144
Heyne 1927: Nutt. Pl., ed. 2. 1113, 1125
Ashton 1968: Man. Dipt. Brun: 120. f. 15