10 FLORA ORCADENSIS. 
Genus XXI.—LYCHNIS (Linn.) 
53. L. ALBA (Mill.), White Campion. 
This plant is reported in Dr Forescue’s list as 
probibly introduced ; but in 1899 I found it on the 
cliffs near Mull Head, and the year previous on the 
clitfs below Cutpool, Deerness, where I had some 
difficulty in securing it. It is native in both places. 
It is also growing in a ditch below U.F. Manse, Evie, 
where it is probably an escape. I found it on Stove, 
Sanday, Sept. 1909; and on Bu, Burray, Aug. 1911. 
54. L ptoica (Linn.), Red Campion. Common. 
This flower favours sandy links and sandstone 
cliffs. 
55. L. Fros-cucutt (Linn.), Ragged Robin. 
(‘ommon. 
56. L. GirHago (Scop.), Corn-cockle. 
This is probably introduced. For two years it grew 
in great profusion among rye on Newark, Deerness, 
but disappeared when rye was no longer cultivated. 
Reported from South Ronaldshay, Sanday, &e. 
Genus XXIJ.—CERASTIUM (Linn.) 
57. C. TETRANDRUM (Curt.), Mouwse-ear Chickweed. 
Common. 
58. C. SEMIDECANDRUM (Linn.), Little Mowse-ear 
Chickweed. Rare. | 
Reported by Dr MeNab, which Prof. Trail con- 
{irmed in loss. Spccimcn sent me by Dr Grant from 
Cava, South Isles, in 1912. 
