Detailed result

Marriott H, Conn J, Conn H. 2000 Asplenium x alternifolium in the Black Hills of south Dakota. Amer. Fern J. 90. (3): 109-110 (2000) - En Geog=3 Systematics: PTERIDOPHYTA (FILICOPSIDA: ASPLENIUM) USA (KR, 200101007).