形態特徵

• Main stems erect, decumbent and bearing rhizophores near the base, 20-50 cm tall, lower portion without leafy branches, or with very short leafy branches.
• Leaves at base of a stem all alike, distant, ovate, entire, acute at apex, auricled at base, nearly equal-sided, pointing upwards; lateral leaves of a branch oblong, entire, apiculate at apex, narrowed at base, unequal-sided; median leaves very unequal-sided, lanceolate, entire, shortly cuspidate at apex.
• Strobili terminal on the leafy branchlets, 5-30 mm long, 4-angled; sporophylls all of one type, ovate-acuminate, equal-sided, keeled, the margins entire.

分布

• 台灣 : Growing on the montane forest floors at low and medium altitudes throughout the Island.
• 世界 : China, India, Nepal, Burma, the Philippines, Malaya, New Guinea and Polynesia.

引證標本

TAIPEI: Wulai, Feung 73; Yinghotong, DeVol 9072. ILAN: Nanhutashan, Kao 5166; Toucheng, DeVol 8122. TAOYUAN: Takuanshan, Shieh & Tsai 13224. MIAOLI: Tahu, Shieh s. n. 1968. TAICHUNG: Pahsienshan, Chuang 2781; Lishan, Feung 302. NANTOU: Chingshueikou, Huang 720; Kuantaochi, Yang 206. CHIAYI: Mt. Alishan, Sasaki s. n. 1936. TAINAN: Kuangtzuling, DeVol 6081. KAOHSIUNG: Wuweishan, Matuda s. n. 1918. PINGTUNG: Nanjenshan, Yang 111; Kengting, Kao 7098. TAITUNG: Shoucha, Keng 2805; Is. Lanyu, Kao 7545. HUALIEN: Lintien, Feung 840; Kueiling, Shieh et al. 624.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 48. 1994.  (Fl. Taiwan 2nd edit.)