Volume 8 > Part 2 > Year 2007 > Page 397 > Euphorbiaceae > Mallotus

10. Mallotus glomerulatus Welzenwfo-0000796616

in Welzen, R.W.Ham & Kulju, Thai Forest Bull., Bot. 32: 174, fig. 1. 2. 2004. Fig. 23; Plate XXI: 2.

Accepted Name : This is currently accepted.

Description : Shrub, 1–1.5 m high, monoecious, but sexes at least on separate branches; young branches shortly hairy, glabrescent. Indumentum mainly of white stellate hairs and a few simple ones; glandular scales absent. Stipules triangular, 3–4 by 1–2 mm. Leaves opposite, distichous; petiole 6–15 mm long, completely pulvinate, pilose; blades of each pair usually equal, elliptic, 9.3–25.5 by 2.5–8.2 cm; length/width ratio 3–3.8, drying greenish, base attenuate, margin entire except for a single subapical tooth at each side, apex acuminate, glabrous, upper surface with round (small ones) to elliptic (larger ones) extrafloral nectaries, basal ones twice as large as smaller ones, latter in loops of nerves along margin; venation penninerved. Inflorescences single, ramiflorous to terminal, very shortly peduncled, peduncle ca 7 mm long; with glomerules of flowers, either with many staminate flowers or a single to a few (ca 4) pistillate flowers; bracts single per flower, triangular, ca 2 by 1–2 mm. Staminate flowers ca 3.7 mm in diam., whitish-green; pedicel ca 4 mm long; sepals 3, ovate, 3.3–3.5 by 1–1.2 mm; stamens ca 26, filaments ca 1 mm long, anthers ca 1.2 by 0.4 mm; pistillode a short stalk, ca 0.3 mm long, with a few hairs on top. Pistillate flowers ca 4 mm in diam., (sub)sessile when young, white; calyx 4-lobed, ca 4.5 mm deep, lobes ca 3 by 1.7 mm; ovary 3(4)-locular, ca 2 by 1.8 mm, villous, without spines; style ca, 2.3 mm long, hairy; stigmas ca 4 mm long. Fruits lobed capsules, on a short (3–4 mm long) pedicel, ca 14 by 10 mm, with few hairs outside, glabrescent, wall thin, rather woody; column broadly T-shaped, 7.5–8 mm long. Seeds obovoid, 7.7–8 by 6.2–7 by 5.5–6 mm, covered by a thin sarcotesta (when young?).

Distribution : Endemic.

Ecology : Scattered in dry evergreen forests, shaded, 150–200 m alt. Flowering: May; fruiting: August.

Vernacular : Mak lium (หมากเหลี่ยม).