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FOC | Family List | FOC Vol. 11 | Euphorbiaceae | Balakata

1. Balakata baccata (Roxburgh) Esser, Blumea. 44: 155. 1999.

浆果乌桕 jiang guo wu jiu

Sapium baccatum Roxburgh, Fl. Ind., ed. 1832, 3: 694. 1832; Carumbium baccatum (Roxburgh) Kurz; Excoecaria affinis Griffith; E. baccata (Roxburgh) Müller Argoviensis; Stillingia paniculata Miquel.

Trees, up to 30 m tall, evergreen, glabrous; trunk up to 60 cm d.b.h.; branchlets usually in whorls, glaucescent. Stipules ca. 1.5 mm, caducous; petioles 3.5-9.5 cm; leaf blade ovate or long ovate, rarely elliptic, 8-22 × 4-11 cm, adaxially hardly shining, abaxially pale papillate, with 3-12 glands per side from margin, basal ones distinctly enlarged, base acute to obtuse, rarely attenuate or cordate, not auriculate, margins entire, apex acuminate; midvein elevated abaxially, lateral veins 10-16 pairs. Inflorescences in terminal whorls and in leaf axils, 4-12 cm, male at upper part, female at base, or sometimes all male. Male flowers: pedicels 2-3 mm; bracts broadly ovate, 1-1.2 × ca. 1.8 mm, base bilateral with 1.5-2 mm oblong and reticular-striate glands; each bract with ca. 6 flowers; bracteoles linear, ca. 1 mm; calyx 2-lobed, lobes 0.5-1 mm, serrulate; stamens with filaments 0.4-0.6 mm, nearly as long as anthers, longer than calyx; anthers globose. Female flowers: pedicels 1.5-2 mm (elongating to 4 mm in fruit); calyx ca. 1 mm, lobes ovate; ovary ovate, smooth, 2-celled; style nearly free. Fruits baccate, 1- or 2-seeded. Seeds subglobose, ca. 5 mm in diam. Fl. Apr-May. n = 22.

Primary and secondary forests, streamsides; 600-700 m. Yunnan [Bangladesh, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam].


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