龙胆木 long dan mu

Baccaurea gracilis Merrill, Philipp. J. Sci. 1(Suppl.): 203. 1906; Flueggea gracilis (Merrill) Petra Hoffmann.

Shrubs to trees, up to 8[-17] m tall, evergreen, glabrous; bark gray. Petiole 4-8 mm; leaf blade papery, oblong-elliptic, obovate, or oblanceolate, 9-16 × 2.5-6 cm, base cuneate, apex shortly acuminate; lateral veins 10-12 pairs, elevated abaxially. Male flowers: inflorescence 2-9 cm; rachis slightly angular; bracts small, ovate-triangular, acute; pedicels very short to absent; sepals ovate, ca. 1 mm, apex obtuse; stamens longer than sepals; filaments ca. 2 mm; rudimentary ovary 2-lobed. Female flowers: inflorescence 1-1.5 cm, racemelike; sepals as in male; disk annular; ovary ovoid, 3-locular; styles 3, free, apex shallowly bifid. Capsules broadly ovoid, ca. 5 × 6-8 mm; exocarp yellowish, brown when dried, with reticular lines. Seeds ca. 3.5 mm. Fl. and fr. almost throughout year.

Moist broad-leaved woodlands; 200-600 m. Hainan [Philippines, Thailand].