江南卷柏 jiang nan juan bai

Lycopodioides filicinum Dillenius; L. minus Dillenius; L. moellendorffii (Hieronymus) H. S. Kung; Selaginella hayatana Kümmerle; S. subcaulescens Hayata (1918), not Baker (1884).

Plants terrestrial or epilithic, evergreen, erect, 20-55 cm, with creeping subterranean rhizome and stolons. Rhizophores restricted to base of stem. Main stems branched from middle upward, pinnately branched, stramineous or reddish, unbranched main stem (5-)10-25 cm tall, stem 1-3 mm in diam. in lower part, terete, glabrous; primary leafy branches 5-8 pairs, 2 or 3 times pinnately branched, branchlets dense and regular, ultimate branches 2.5-4 mm wide including leaves. Axillary leaves symmetrical, ovate, 1-2.2 × 0.4-1 mm, base exauriculate, margin denticulate. Dorsal leaves imbricate, ovate-orbicular, 0.6-1.8 × 0.3-0.8 mm, not carinate or slightly carinate, base obliquely subcordate, margin denticulate, apex aristate, parallel to axis or imbricate. Ventral leaves contiguous, slightly ascending, ovate-triangular, 1-2.4 × 0.5-1.8 mm, margin denticulate, apex acute; basiscopic base slightly dilated, margin subentire or denticulate at base; acroscopic base enlarged, broader, not overlapping stem and branches, margin denticulate. Strobili solitary, terminal, compact, tetragonal, 5-15 × 1.4-2.8 mm; sporophylls uniform, white-margined, ovate-triangular, carinate, margin denticulate, apex acuminate; megasporophylls in middle on lower side; microsporangia elliptic-oblong, rather thin, cells regular; microspores yellowish orange, megaspores pale yellow, without equatorial flange.

On rocks, in rock crevices; 100-1500 m. Anhui, Chongqing, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Japan, Philippines, Vietnam].