西藏八角 xi zang ba jiao

Ternstroemia khasyana Choisy.

Trees to 30 m tall. Perules small, inconspicuous. Leaves in clusters of 3-5 at distal nodes; petiole 0.7-1.7 cm; leaf blade oblong-elliptic to narrowly obovate-elliptic, 7-13 × 2-5.5 cm, leathery, midvein adaxially conspicuously impressed, secondary veins 7-10 on each side of midvein, abaxially prominent, and adaxially ± impressed to slightly raised, base narrowly cuneate, apex acuminate. Flowers axillary or subterminal. Flower peduncle 1-2 cm. Tepals 25 or 26, oblong-obovate (inner), 4-10 × 2.5-10 mm (inner), papery to thinly leathery (outer) to fleshy (inner). Stamens ca. 30, 2.3-2.7 mm; filaments 1.1-1.4 mm; connectives subtruncate; anthers 1-1.4 mm; pollen grains trisyncolpate. Carpels 12 or 13, 4-4.5 mm; ovary ca. 1.5 mm; style 2.5-3 mm. Fruit peduncle 1.5-4.7 cm. Fruit with 12 or 13 follicles; follicles 1.4-2 × 0.8-1 × 0.3-0.5 cm. Seeds ca. 7 × 5 × 2-2.5 mm. Fl. Apr-May, fr. Oct-Dec.

Forests; 1200-2300 m. S Xizang [Bhutan, NE India].