6 FLORA ORCADENSIS. 
26. C. HirsutA (Linn.), Bitter Cress. Local; fairly 
common. 
27. OC. FLEXUOSA (With.), Bitter Cress. 
Rarer than the last. Redland, Firth, 1901 ; no 
doubt in other places. 
Genus IX.—CAKILE 
28, C. MARITIMA (Scop.), Sea-rocket. 
Fairly common in suitable localities on sandy 
shores. Shores —Evie, Deerness, Scapa, Hoy, Me. 
Genus X.—RAPHANUS. 
29. R. RAPHANISTRUM (Linn.), Radish. Common. 
Genus XI.—BRASSICA. 
30. B. ARVENSIS (Linn.), Charlock, Common. 
This and the last are known in Orkney as 
“runshuk.” The latter favours sandy soil, the former 
clayey. 
31. B. RAPA (Linn.) 
Var. sylvestris (Wats.) Little Sea, Lady, Sanday, 
naturalised (Col. H. H. Johnston, C.B.) 
Genus XII.—BARBAREA. 
32. B. VULGARIS (Br.), Wanter. cress. 
I found this behind Seapa Distillery in May 1898, 
and several on Quoybellock in 1899. Introduced 
with seeds no doubt. 
tmenus XIJIL—DRABA. 
33. D. veRNA (Linn.), Whitlow-grass. Fairly 
common. 
