Alangium meyeri Merr.

Dewilde, W. J. J. O. & Duyfjes, B. E. E., 2017, Taxonomy of Alangium section Conostigma (Alangiaceae), Blumea 62 (1), pp. 29-46 : 37

11. Alangium meyeri Merr.

Alangium meyeri Merr.(1906) 54. — Alangium javanicum (Blume) Wangerin var. meyeri (Merr.) Berhaman (1994) 34; (1995) 10. — Type: Meyer FB 2284 (holo PNH †; iso B †, BO, K K000704820 , NY NY00218024 , SING, US US 00127563),Philippines, Luzon, Bataan, Lamao River, Mt Mariveles , Dec. 1904, fl .

Alangium tutela Ridl. (1912) 10; (1922) 894. ― Alangium ebenaceum (C.B. Clarke) Harms var. tutela (Ridl.) Kochummen (1970) 133. — Type: Ridley (Goodenough) 5082 (holo SING SING0059171 ; iso BM BM000944960 ), Singapore, Ponggol , 4 May 1893, fl.

Tree to 25 m tall; twigs brown, 1.5–4 mm diam, at apex (including leaf bud) minutely hairy (hairs c. 0.1 mm long), glabrescent. Leaves: petiole 1–1.5 cm long; lamina drying brown, early glabrescent from minute hairs, (narrowly) elliptic or elliptic-oblong, (8–)10–18 by 4–7 cm, base almost symmetric, rounded or (short) attenuate, apex acute or acute-acuminate; veins pinnate, 6–10 on each side, loop-veined towards apex of lamina; tertiary venation reticulate-scalariform. Inflorescences minutely hairy (hairs c. 0.1 mm long), of 1 or 2 main branches (peduncles) from the leaf axil, each (1–)2–10-flowered, sessile or peduncle(s) to 20 mm long. Flowers minutely hairy, pedicel 2 –4 mm long; corolla in bud 8–14 mm long, base not swollen, apex (sub)obtuse; ovary and calyx c. 2 mm long, ± ridged; limb ± spreading, 1–1.5 mm long, at margin 4–5 mm wide, subtruncate or usually shallowly lobed; petals 6 (or 7), inside short-hairy, 10–14 mm long; stamens 6 (or 7), filament c. 4 mm long, flattened, outside hairy or glabrous, at apex hairy, anthers 6–7 mm long, connective glabrous; style appressed short-hairy, 6 –10 mm long, stigma narrowly conical. Fruit (1–)2–4 per infructescence, ripening red to purple, minutely hairy, ovoid-ellipsoid, (18–)20–25 by 12–15 mm, (6–)10–12-ribbed or not; calyx remnant 1–2 mm long, c. 4 mm wide, shallowly lobed.

Distribution — Sumatra, Peninsular Malaysia, Singapore, Borneo, Philippines. For convenience sake, 2 varieties are recognised.

Key to the varieties

1. Twigs 2–4 mm diam. Lamina 10–18 cm long, veins 6–10 on each side. Corolla in bud 10–14 mm long............................................. a. var. meyeri