贡山八角 gong shan ba jiao

Trees to 10 m tall. Perules oblong, largest 0.8-1.3 cm. Leaves in clusters of 3 or 4 at distal nodes; petiole 1.2-2 cm; leaf blade narrowly oblong-elliptic, 8-12 × 2.5-5 cm, leathery, midvein adaxially impressed, secondary veins 8-13 on each side of midvein, abaxially ± prominent, and adaxially impressed or flat, base narrowly cuneate, apex cuspidate to shortly acuminate. Flowers axillary. Flower peduncle 6-10 mm. Tepals 27-30, pale yellow, white, or sometimes pinkish, oblong (outer), oblong-tonguelike (largest), to tonguelike-lanceolate (inner), 10-11 × 6-8 mm (outer), 14-17(-21) × 2.5-4.5 mm (largest), (5-)8-11 × 1.5-2 mm (inner), thinly papery (outer and largest). Stamens 28-35, 3.5-4.5 mm; filaments 1.5-2.5 mm; connectives obtuse to cuspidate; anthers 1.9-2.5 mm; pollen grains tricolpate. Carpels 12 or 13, 4-6 mm; ovary 1.5-2 mm; style 2.3-4 mm. Fruit peduncle 0.8-1.5 cm. Fruit with 12 or 13 follicles; follicles 2.5-2.8 × 1-1.1 × 0.2-0.3 cm. Seed size unknown. Fl. Mar, fr. Jul-Sep.

Forests; 1800-2700 m. NW Yunnan [Myanmar].