形態特徵

• Main stems creeping, 5-15 cm long, branching and forming a dense mat, rooting at intervals.
• Leaves on young stems very closely spaced; stem leaves dimorphic, the midribs absent or indistinct; lateral leaves unequal-sided, ovate, ciliate, acute at apex, pointing outwards; median leaves slightly unequal-sided, ouate, ciliate, acuminate at apex, pointing upwards; axillary leaves equal-sided, lanceolate, ciliate.
• Sporophylls borne loosely on erect or semi-erect branches, not arranged in compact strobili; the upper sporophylls nearly monomorphic, narrowly ovate, the lower ones gradually merging into the dimorphic stem leaves; microsporophylls borne towards apex, megasporophylls basal. Microspores orange, megaspores pale yellow.

分布

• 台灣 : Growing in partial shades or on mossy banks.
• 世界 : China, Japan.

引證標本

NANTOU: Chitou, Kuo 153, Kao 6738. HUALIEN: Mataian, Yamamoto 3203; Tienhsiang, Kao et al. 6163.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG. 1994. Flora of Taiwan, second edition 1: 53. (Fl. Taiwan 2nd edit.)