Trigonopleura

Primary tabs

Trigonopleura

Description

Trees, dioecious. Leaves simple, distichous; Stipules falcate, early caducous, tomentose. Inflorescences dense axillary clusters of 2-many flowers (reduced thyrses), tomentose, brachyblasts increasing in size with age; Flowers actinomorphic; Fruits globose rhegmas, outside densely tomentose, reticulately wrinkled when dry, with 6 raised lines, dehiscing completely septicidally and partly loculicidally into 3 bifid pieces; Seeds ovoid, flattened, 1-3 per fruit, black, glossy, abaxially covered up to ⅔ rd by a thin, sometimes lobed aril, lobes sometimes touching adaxially;

Distribution

Asia-Tropical: Borneo present (Sarawak present); Malaya (Peninsular Malaysia present, Singapore absent); Philippines (Philippines present); Sulawesi (Sulawesi present); Sumatera (Sumatera present), W Malesia present
The genus comprises 3 species, all found in Malesia. One is widespread in W Malesia (Peninsular Malaysia, Sumatra, Borneo, Sulawesi; not known from Singapore), the others are endemics in Sarawak or in the Philippines.

Citation

Whitmore 1973 – In: Tree Fl. Malaya: 134
G.L.Webster 1994 – In: Ann. Missouri Bot. Gard.: 65
Welzen, Bulalacao & On 1995 – In: Blumea: 368
Hook.f. 1981 – In: Kew Bull.: 350
Bulalacao & On 1992 – In: Natl. Mus. Pap. (Philippines): 67
Hook.f. 1983: Alphabet. Enum. Euphorb. Philipp. Isl.: 46
Hook.f. 1919 – In: Pflanzenr.: 42
Pax & K.Hoffm. 1911 – In: Engl., Pflanzenr. 147: 95
Radcl.-Sm. 2001: Gen. Euphorbicearum: 115
Ridl. 1922 – In: Fl. Malay Penins.: 290
Airy Shaw 1975 – In: Kew Bull.: 201
Pax 1890 – In: Engl. & Prantl, Pflanzenfam. 3: 84