Rinorea lanceolata

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Rinorea lanceolata


Growth mostly in flushes; Leaves mostly spirally arranged, sometimes distichous. Stipules 4-11 mm long, rather wide at the base, brown and striate, leaving rather distinct scars. Inflorescences on the young twigs rarely also on branchlets, laxly globose to compound corymbose in shape, 1-9 cm long in all; Sepals 2¼-5 by 1¾-4½ mm, suborbicular, elliptic or ovate, more or less fleshy, with thin margin, the outer sepals somewhat shorter and wider than the inner ones and sometimes with a cucullate top, somewhat hairy particulary in the centre. Petals 3½-7(-9) by 1¼-2 mm, widest about the middle, thin, top sometimes recurved, outside with a pale median band of hairs. Stamens consisting of a filamental tube of 0.2-0.3 part of the total length, a filamental of 0.4-0.5 part, and an anther of (0.2-)0.3-0.4 part; Fruits subtended by the persistent sepals and petals, before dehiscence subglobose to slightly ovoid, the hairy style always persistent, 8-11 mm long, the valves leathery, brownish, more or less hairy, splitting straightly;


Asia-Tropical: Malaya present; Sumatera (Sumatera present), Burma present, Lingga Is present, Peninsular Siam present, Peutjang I. in Sunda Straits present, S. Tenasserim present, very SW of Java present
Burma: S. Tenasserim; Peninsular Siam; in Malesia: common in Malaya, scattered in Sumatra (also Lingga Is.) and in the very SW of Java (also Peutjang I. in Sunda Straits.)


A shrub ½-3 m to a tree 6 -13(-21) m by 4-30 cm ø, bark grey smooth thin, the twigs may be drooping at the top. Leaves light or yellowish green, once reported darker above, and once glossy. Flowers with green calyx and (waxy) white-yellow corolla. Fruits (pale) green when ripe.
In one specimen the fruits are 4-merous.
The species is quite polymorphic. All specimens from Penang (the type locality) are glabrous, with narrow leaves: index 3.3-6.1, and small inflorescence: peduncle 1½-5 mm. All specimens from Perak are hairy, with rather wide obovate leaves: index 2.6-3.3, with broad base, and large inflorescences: peduncle 2½-3 cm. All specimens from Peninsular Burma and Siam (‘R. mollis’) are hairy, with still wider leaves: index 2.4-2.8, and very wide sepals. All specimens from West Java and Peutjang are glabrous, with 1 cm stalked large leaves with domatia, and lax inflorescences 5-8 cm long in all. KOORDERS 4498 and 4499 are placed here on account of their domatia. Except for the domatia, the above forms are not restricted to the districts mentioned, and in other provinces various forms have been found.


King 1889 – In: J. As. Soc. Beng.: 404
Wall. 1832 – In: Fl. Ind., ed. Carey: 648
J. J. SMITH 1914 – In: K. & V., Bijdr. 13: 70
TAUB. 1895 – In: E. & P., Nat. Pfl. Fam. 3: 329
BACK. & BAKH.f. 1964 – In: Fl. Java: 193
JACOBS 1967 – In: Blumea: 133
Ridl. 1922 – In: Fl. Mal. Pen.: 132
Koord. 1912 – In: Exk. Fl. Java: 65
HOOK.f. & TH. 1872 – In: Hook.f., Fl. Br. Ind. 1: 188
King 1889 – In: J. As. Soc. Beng.: 402
CRAIB 1925 – In: Fl. Siam. En.: 90
Ridl. 1922 – In: Fl. Mal. Pen.: 130
Merr. 1954 – In: J. Arn. Arb.: 145
King 1896: p. 125. – In: Ann. R. Bot. Gard. Calc.: pi. 143B
Ridl. 1922 – In: Fl. Mal. Pen.: 131
Miq. 1869 – In: Ann.: 215
BACK. 1911: Schoolfl.: 67
KURZ 1877 – In: For. Fl. Burma: 70
OUDEM. 1867 – In: Arch. Neerl. Sc. Ex. Nat.: 196