Fen-fearn
Bosworth & Toller 盎格鲁-撒克逊古英语词典 - fen-fearn
根据古英语词典：
fen-fern, es;
- fen-fearn
- n. The fen or water-fern, flowering fern, the herb christopher, osmund-royal; osmunda rēgālis, Lin. salvia?-Fenfearn salvia, Ælfc. Gl. 42; Som. 64, 8; Wrt. Voc. 31, 19.