锡金石杉 xi jin shi shan

Lycopodium herterianum Kümmerle, Magyar Bot. Lapok 26: 99. 1927; Huperzia kamaensis Ching; H. maerhkangensis Ching; H. multidichotoma Ching; H. obscuredenticulata Ching; L. sikkimense Herter (1909), not Müller (Halle) (1861); Urostachys herterianus (Kümmerle) Herter; U. sikkimensis Herter ex Nessel.

Plants terrestrial. Stem erect or ascending, 4-19 cm, 1.5-2.5 mm in diam. at middle, together with leaves 1-1.5 cm wide, 2-4 times dichotomously branched, upper portion with bulbils. Leaves dense, reflexed, lustrous, oblanceolate, not conspicuously contracted toward base, falcate, 5-9 × < 1 mm, thinly leathery, both surfaces glabrous, midrib indistinct, base cuneate, decurrent, sessile, margin straight and not crispate, upper portion with erose small teeth or entire, apex acute or acuminate. Sporophylls homomorphic with trophophylls; sporangia visible on both sides of sporophylls, yellowish, reniform.

Wet places in forests, moss-covered shrubs; 2000-3900 m. Guizhou (Leigong Shan), W Sichuan, S and SE Xizang, Yunnan (Gongshan) [Bhutan, NE India, Nepal].

This is a typical Sino-Himalayan Huperzia. Its leaves are falcate and lustrous.