形態特徵

• Rhizomes widely creeping, rooting at intervals, its scale-like leaves appressed, equal-sided, lanceolate, subentire, acuminate at apex; erect aerial stems usually 2-3 cm apart, 8-20 cm tall, the lower half without bramches, terete, often brown or purplish.
• Leaves at base of stems monomorphic, equal-sided, ovate-acuminate, pointing upwards; lateral leaves on branches contiguous, broadly ovate, minutely serrulate along the upper margin, pointing outwards; median leaves nearly equal-sided, narrowly ovate, acuminate-aristate.
• Strobili borne on ends of branchlets, 1-3 cm long; sporophylls monomorphic, ovate, acuminate at apex, the margins scarious, erose.

分布

• 台灣 : Growing on dry rocky clifts or tree trunks.
• 世界 : China, Korea, Mongolia and Manchuria.

引證標本

ILAN: Tuchang, Suzuki 6338. TAOYUAN: Takuanshan, Shieh & Tsai 8979. CHIAYI: Mt. Alishan, Jeng 215. PINGTUNG: Gukuku, Matuda 600. TAITUNG:Chippan, Sasaki s. n. 1934. HUALIEN: Tienhsiang, Kao 7838; Kueilin, Shieh & Chen 714.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG. 1994. Flora of Taiwan, second edition 1: 54. (Fl. Taiwan 2nd edit.)