形態特徵

• Frond dimorphic.
• sterile fronds bipinnate, usually 50-80 cm tall; pinnae articulate to rachis; pinnules subsessile, articulate to rachilla, lanceolate, the margins serrulate, usually about 4-6 cm long, about 1.5-2 cm broad (rarely longer), usually glabrous, sometimes puberulent along veins; fertile fronds 20-50 cm tall bipinnate, without lamina; very young fronds covered with a tangled mass of pale brown hairs, these flat and very long.
• Sporangia crowded in dense clusters on pinna-axis.

分布

• 台灣 : Growing on exposed hillsides, grasslands.
• 世界 : Japan, Korea, the Ryukyus and China.

引證標本

TAIPEI: Tatungshan, Kuo 1350; Peitou, Simozawa 743. ILAN: Lotung, Suzuki s. n. 1928; Nanhutashan, Kuo 504; Kueishan Is., Kuo 1563. HSINCHU: Mogiri, Fukuyama 3507. CHIAYI: Mt. Alishan, Kao 7723. KAOHSIUNG: Kuangyingshan, Kuo 30; Tienchih, Shieh & Tsai 5640*.

參考文獻

• SHIEH, WANG-CHUENG. 1994. Flora of Taiwan, second edition 1: 82. (Fl. Taiwan 2nd edit.)