Herminium lanceum (Thunb. ex Sw.) Vuijk

Plants slender, 15-60 cm tall. Stem leafy. Leaves 2-3(-4), linear, up to 20 x 1.5 cm. Inflorescence very long and narrow, up to 25 cm long, 0.7-1 cm broad, subsecund. Flowers numerous, ± deflexed, green. Bracts linear-lanceolate, acuminate, exceeding ovary. Dorsal sepal elliptic-oblong, 3.2 x 1.6 mm, forming a loose hood with linear, one-nerved petals; lateral sepals ± spreading 3.0 x 1.2 mm: Petals 3.0 x 0.4 mm. Labellum longer than sepals, linear, ± constricted in the middle, apical portion trifid, side-lobes variable in length but always longer than the small, triangular midlobe, straight or slightly curved inwards. Ovary sessile, slightly twisted, apex with a knee-like bent.

Himalaya (Simla to Sikkim), S.E. Tibet, India, Burma, Thailand, Indo-China, China, Japan, Malaysia.

Distribution: Abundant from Western Himalaya eastwards to Bhutan, Tibet, the Khasia and Naga Hills, China, Manchuria, Japan, Taiwan, Java, Timor, Celebes, and Ryukyu Island. Up to 3500 m. In Pakistan in the mountains on the eastern border.

1500-3500 m

Fl. Per.: July-August.

Herminium lanceum là một loài thực vật có hoa trong họ Lan. Loài này được (Thunb. ex Sw.) Vuikj mô tả khoa học đầu tiên năm 1961.

细叶零余子草（学名：Herminium lanceum），又名脚根兰、叉唇角盘兰，为兰科脚根兰属下的一个种。