相马石杉

本种与峨眉石杉的主要区别：叶窄椭圆形，长2-4毫米，基部楔形。

分布：日本及菲律宾

产地：台湾

Huperzia somai (Hayata) Ching in Acta Bot. Yunnan. 3 (3): 301. 1981; B. Ollg. in Opera Bot. 92: 164. 1987, et Index Lycop. 21. 1989; Nakaike, N. Fl. Jap. Pterid. rev. enlarg. 792. 1992; L. B. Zhang et H. S. Kung in Acta Phytotax. Sin. 36 (6): 526. 1998. ——Lycopodium somai Hayata, Ic. Pl. Formos. 5: 255, f. 91. 1915; Takeo, Ill. Formos. Pl. Suppl. 15, f. 15. 1928; Tagawa, Coil. in. Jap. Pterid. 9, Pl. 1-4. 1959; De Vol in H. L. Li, FI. Taiwan 1: 29. 1975; Nakaike, N. Fl. Jap. Pterid. 33, f. 33. 1982; C. M. Kuo in Taiwania 30: 11. 1985; B. Ollg., Index Lyoop. 71. 1989; K. Iwats., Ferns Fern Allies Jap. 44, Pl. 2: 3. 1992; J. C. Tsai et W. C.Shieh in T. C. Huang, Fl. Taiwan ed. 2, 1: 42. 1994. ——L. chinense Christ var. so-mai (Hayata) Masam. in Mem. Fac. Sci. Agr. Taihoku Imp. Univ. 2: 114. 1934. ——L. selago L. var. somai (Hayata) Masam. Short, Fl. Form. 32. 1936; Ohwi. Fl. Jap. Pterid. 8. 1957. ——Urostachys somai (Hayata) Herter ex Nessel, Baerlappg. 54. 1939; B. Ollg. Index Lycop. 101. 1989.