Blumeodendron

Blumeodendron View in CoL

Blumeodendron (Müll.Arg.) Kurz (1874) View in CoL 245;(1877) 391;J.J.Sm. (1910) 458; Koord. (1912) 493; Pax & K.Hoffm. (1914) 47; Merr.(1920) 554;Ridl. (1924) 281; Pax & K.Hoffm. (1931) 107; Backer & Bakh.f. (1963) 479; Airy Shaw (1963) 348; (1972b) 224;Whitmore (1973) 68; L.C.Wheeler (1975) 535; Airy Shaw (1975) 57; (1980) 37; (1981) 267; (1982) 9; (1983) 10; G.L.Webster (1994) 77; Radcl.-Sm. (2001) 170;Chayam. (2005) 130;G.L.Webster (2014) 125. — Mallotus Lour. sect. Blumeodendron Müll.Arg. (1866) 956; Benth. (1880) 319; Hook.f. (1887) 427; Pax (1890) 53. — Lectotype (designated by Wheeler 1975): Elateriospermum tokbrai Blume View in CoL (= Blumeodendron tokbrai (Blume) Kurz View in CoL ).

Trees, dioecious; branchlets generally round in section, nodes thickened. Indumentum consisting of small, orange, lepidote hairs, glabrescent, few species locally with additional simple hairs. Stipules absent. Leaves alternate, subopposite or pseudowhorled, simple; petiole apically but more so basally pulvinate, in section round but grooved transversely when dry; blade elliptic to obovate, margin entire, revolute, extrafloral nectaries 2, adaxially near base and additional smaller ones (up to 20(–40)) along midrib and margin; venation pinnate, marginal vein indistinct, primary and secondary nerves slightly raised above, secondary nerves looped and closed near the margin, tertiary nerves scalariform, higher order nerves reticulate or partly sclariform. Inflorescences axillary or terminally thyrses, one or more together, erect. Flowers: pedicel with abscission zone; flowers actinomorphic, 5-merous, buds globose; sepals elliptic, valvate, margin entire; petals absent; disc present. Staminate flowers: sepals 3–4; disc glands on convex receptacle, providing a ruminate surface with the stamens in between the glands; stamens 31–40, anthers basifixed, 2-thecate, opening latrorse via lengthwise slits; pistillode absent. Pistillate flowers: sepals (3–)4–5; disc annular, broad; ovary 2–3-locular, placenta basal, ovulum single per locule, hemitropous; styles very short; stigmas 2–3, entire, often recurved, above papillate. Fruits capsular, globular or ovoid, tardily completely septicidally and partly loculicidally dehiscent into bivalved cocci; pedicels thickened; wall woody, surface somewhat knobbly. Seeds ovoid to subglobular, with sometimes flattened sides, more or less bean-shaped; sarcotesta present.

Distribution — Nine species ranging from Burma and the Andamans via Thailand through Malesia to New Guinea and the Bismarck Archipelago.