中缅八角 zhong mian ba jiao

Shrubs or trees, to 12 m tall. Perules lanceolate-ovate, largest 1.2-1.5 cm. Leaves in clusters of 4-10 at distal nodes; petiole 1.5-3 cm; leaf blade oblong-lanceolate, obovate-oblong, or sometimes lanceolate, 7-12 × 2.5-4 cm, papery, midvein adaxially impressed, secondary veins 8-12 on each side of midvein, abaxially prominent, and adaxially prominent or ± flat, base broadly cuneate, apex cuspidate to shortly acute. Flowers axillary. Flower peduncle 3-10 mm. Tepals 20-27, white or ± purple, elliptic to oblong-elliptic (outer and inner) to oblong-obovate (largest), 13-15 × 3-5.5 mm (largest), papery (outer and largest) to gradually shorter and narrower (inner). Stamens 20-24, 3.8-4.2 mm; filaments 1.2-1.6 mm; connectives truncate to slightly extended and obtuse; anthers 2.1-2.7 mm; pollen grains tricolpate. Carpels 8-12, 4-5 mm; ovary 1.5-2.5 mm; style 2-3 mm. Fruit peduncle length unknown. Fruit with 8-10 follicles; follicles ca. 2 × 0.8-0.9 × ca. 0.4 cm. Seed size unknown. Fl. Apr-Nov, fr. Aug.

Forests; 2300-2700 m. W Yunnan [Myanmar].