CRYPTOGAME. 93 
533. A. TRICHOMANES (Linn.), Common Spleenwort. 
Local ; rather rare. 
Hoy ; Evie ; Rousay ; Westray ; Harray. Gathered 
by me in Rousay in 1894. 
534. A. RUTA-MURARIA (Linn.), Wall Rue. Rare. 
Ward Hill, Rousay. 
535. A. MARINUM (Linn.), Sea Spleenwort. Fairly 
common. 
Scapa; Hobister ; Deerness ; Head of Holland. 
This fern is generally found where there is a sea cliff 
exposure of red or yellow sandstone. 
Genus CCXLIT.—ATHYRIUM (Roth.) 
536. A. FILIX-Fa@MINA (Roth.), Lady Fern. Common. 
Var. A. rheticum (Roth.) J. Spence, Overabist, 
Hillside, Birsay, reports this variety from his 
neighbourhood. 
Genus CCXLITI.—PHYLLITIS (Hill), Hart’s-tongue. 
537. P. SCOLOPENDRIUM (Greene). 
Tam afraid this fern is now extinct, or very nearly 
so, in Orkney. It at one time grew in Rousay, 
Eynhallow, and Hoy. Mrs Anderson, Manse, Hoy, 
found the last known one on the cliffs to the east of 
Dwarfie Stone. 
Genus CCXLIV.—CYSTOPTERIS (Bernh.), Bladder Fern. 
538. C. FRAGILIS (Bernh.) Local and scarce. 
Hoy; Rousay; Fitty Hill, Westray; Redland, 
Firth ; and in shaded places on other hills. 
