凉山石杉 liang shan shi shan

Lycopodium liangshanicum H. S. Kung, Acta Bot. Yunnan. 2: 100. 1980.

Plants terrestrial. Stem erect or ascending, ca. 18 cm, 1.5-2.5 mm in diam. at middle, together with leaves 1.2-1.8 cm wide, 2 or 3 times dichotomously branched, upper portion often with bulbils. Leaves sparse, reflexed, lustrous, oblanceolate, indistinctly contracted toward base, straight, 7-9 × 1.5-2 mm, thinly leathery, both surfaces glabrous, midrib distinct, base cuneate, decurrent, petiolate, margins straight and not crispate, upper portions irregularly toothed, apex acute; teeth small, acute. Sporophylls homomorphic with trophophylls; sporangia visible on both sides of sporophylls, yellowish, reniform.

● Within moss layer in forests; ca. 2800 m. Sichuan (Leibo), ?Yunnan (Gongshan, Wenshan).

The leaves of Huperzia liangshanica are thinly leathery; its leaf apex is acute, and its leaf margins have shallow teeth.