Xanthophyllum rufum
Content
Description
Tree, up to 32 m, 40 cm dbh.
Leaf-blade 8-25 by 4-13 cm, base sometimes cordate;
Inflorescences sometimes unbranched, shorter than to as long as the leaves;
Sepals persistent or not, sometimes present under fully ripe fruits (then up to c. 12 mm long), very densely rufous-hairy outside, glands present or not, inconspicuous;
Petals white, the upper ones with a yellow spot, when dry yellowish, the longest one 12-15 mm;
Stamens:
Ovary very densely rufous-pubescent all round or pubescent in 4(-8) rows, the median rows mostly longer than the lateral ones;
Fruit globular, up to 1.8 cm diam., often with 2-4, sometimes hairy ridges running down from the style-scar, yellowish green, dull, finely tuberculate;
Distribution
Asia-Tropical: Borneo present; Malaya (Peninsular Malaysia present); Sumatera (Sumatera present)
Malesia: Sumatra, Malay Peninsula, Borneo.
Notes
In most Bornean collections the ovary is hairy all round (or sometimes hairy in 8 rows), and the sepals are more or less persistent in fruit ('X. heterophyllum' CHODAT). In Malaya ('X. rufum') and Sumatra ('X. flavum' RIDLEY) the ovary is usually hairy in 4 rows, and the sepals are soon dropping off. These differences are not consistent in Malaya, however, as sometimes the ovary is hairy all round, or the sepals are persistent. Apart from those I did not find other differences; therefore it is not necessary to distinguish varieties based on these conspicuous but minor and grading differences.
Citation
GAGNEP. 1908 – In: Desv., J. Bot. 21: 252
RIDLEY 1922 – In: Fl. Mal. Pen.: 145
NG 1972 – In: Tree Fl. Mal.: 363
WATSON 1928 – In: Mal. For. Rec.: 249
MEIJER 1967 – In: Bot. News Bull. Sandakan: 87
MAINGAY 1890: Kew Bull.: 113
MASAMUNE 1942: En. Phan. Born.: 380
BALAN MENON 1956 – In: Mal. For. Rec.: 34
BURK. 1935: Dict.: 2269
MEIJDEN 1982: p. 76. – In: Leiden Bot. Ser.: f. 3A-1, 12
WYATT-SMITH 1963 – In: Mal. For. Rec.: f. 5, 9
NG 1972: p. 361. – In: Tree Fl. Mal.: f. 4
King 1890: Mat. Fl. Mal. Pen.: 144
WYATT-SMITH 1952 – In: Mal. For. Rec.: 81, 362