~ 
CRYPTOGAMEZ. 95 
gathered by Dr Boswell on west side of Waulk Mill 
Bay in 1875.” I got several near Waulk Mill in 1903, 
and burn, Redland, Firth, in 1905. 
545. L. OREOPTERIS (Presl.), Mountain Fern. Rare. 
Orphir and Hoy (Dr Boswell). 
Genus CCXLVII.—BOTRYCHIUM (8w.), Moonwort. 
546. B. LUNARIA (Sw.) 
Var. encisum (Milde). Fairly well scattered over 
the Mainland and islands—Stenness; Deerness; Orphir. 
Var. encisuwm is, I think, the more common form in 
_ Orkney. 
ae CCXLVIII.—OPHIOGLOSSUM (Linn.), 
Adder’s-tongue. 
547. O. VULGATUM (Linn.) 
Var. ambiguum. Scarce. Orphir ; Flotta ; Calf of 
Ryssa; Hunda; Hoy; Eday; Dounby; Calf of Cava. 
Dr Fortescue says :—“ Among short grass on the top 
of the sea-banks only where the grass is cropped 
short by sheep. On one spot the grass was allowed 
to grow rank, and the adder’s-tongue disappeared.” 
OrDER LXI.—LYCOPODIACE. 
Genus CCXLIX.—LYCOPODIUM (Linn.), Club-moss. 
548, L. CLAVATUM (Linn.) Fairly common. 
Hoy ; Mainland ; Rousay. 
549. L. ANNOTINUM (Linn.), Club-moss. Local ; 
scarcer than the last. 
Berriedale, Hoy. Gathered in 1904 by myself; 
