西藏大豆蔻 xi zang da dou kou

Ligule oblong, entire, ca. 1 cm, membranous, margin ciliate; petiole 1--1.5 cm; leaf blade lanceolate, 30--70 × 7--10 cm, adaxially glabrous, abaxially pilose, base cuneate, oblique, apex caudate-acuminate. Spikes ovoid-oblong, 10--14 cm; peduncle absent; outer bracts ovate or ovate-oblong, 3.5--9 × ca. 3 cm, abaxially densely tomentose; bracteoles linear, 6.5--10 cm, abaxially densely pilose. Flowers unknown. Capsule oblong, ca. 4 × 1.2 cm, apex with persistent calyx ca. 4.5 cm. Seeds numerous, ca. 2.5 × 1.5 mm.

* Broad-leaved forests; 800--1000 m. SE Xizang (Mêdog Xian).