赤水石杉 chi shui shi shan

Plants terrestrial. Stem erect or ascending, 8-16 cm, ca. 1 mm in diam. at middle, together with leaves 1.5-2 cm wide, 1 or 2 times dichotomously branched, upper portion often with bulbils. Leaves dense, attached at right angles with stem, nearly flat abaxially, lustrous, narrowly elliptic-lanceolate, conspicuously contracted toward base, straight, 6-7 × 0.7-1.8 mm, papery, both surfaces glabrous, midrib indistinct, base cuneate, decurrent, petiolate, margin straight and not crispate, upper portion with indistinct sparse teeth, apex acute. Sporophylls ± homomorphic with trophophylls, but much smaller; sporangia visible on both sides of sporophylls, yellowish green, reniform.

● Wet soils among moss under shrubs; 1400-1500 m. N Guizhou.

The leaves of Huperzia chishuiensis are dimorphic with the sporophylls being much smaller than the trophophylls, acute apically, papery, and lustrous.