Reference:
1. Kuo, C. M. 1985. Taxonomy and Phytogeography of Taiwanese Pteridophytes. Taiwania 30: 5-100. (page 66, notes 169 170) 2. Ching, R. C. & K. Iwatsuki. 1982. Annotations and corrigenda on the Sino-Japanese Pteridophytes (1). J. Jap. Bot. 57: 129-132. 3. Morton, C. V. 1973. Studies on fern types II. Contr. U. S. Nat. Herb. 38: 29-83.