1. Abbe E (1981) The Fern Herbal including the ferns, the horsetails and the club mosses. Comstock Publ Assoc/Cornell Univ Press Anon (1986) Taxomonic studies of the plants of Seram Island. Bot Gard, Univ Tokyo.
2. Arriaga-Giner FJ, Iinuma M, Tanaka T, Mizuno M, Scheele C, Wollenweber E (1987) IZ Naturforsch 42c: 1063–1067.
3. Barrington DS, Paris CA, Ranker TA (1986) Am Fern J 76:149–159.
4. Bennert HW, Rasbach H, Rasbach K (1987) Fern Gaz 13(3):133–141.
5. Bir SS, Rani S, Verma SC (1986) Indian Fern J 3:22–37.