12 FLORA ORCADENSIS. 
Genus XXVI.—SAGINA (Linn.), Pearlwort. 
68. S. MARITIMA (Don.), Sea-pearlwort. 
Fairly common on seashore, Swanbister (Dr Fort- 
escue); below E.C. Manse, Deerness ; and elsewhere. 
There is a much larger variety growing in Papa 
Westray. Var. debilis (Jord.) was sent me from 
Stromness Harbour by Dr Grant. 
69. S. PROCUMBENS (Linn.), Creeping Pearlwort. 
Common. 
Var. spinosa (Gibs.) This interesting var. was 
found by Dr Grant near Stromness. 
70. S. NoDosa (Fenzl.), Anotted Pearlwort. Loeal, 
not common. 
Var. S. glandulosa (Bess) The variety is the 
more common form. 
Genus XXVITI.—SPERGULA. 
71. S. ARVENSIS (Linn.), Spurvrvey. Not common. 
72. S. sativa (Boenn.), Spurvey. 
This form is much more common than the last. 
Genus XXVIII -—SPERGULARIA (Presl.) 
73. S. RUBRA (Pers.), Seasude Npurrey. 
The Ayre, Kirkwall (Dr Duguid); Stromness (Dr 
Grant, in Oct. 1898); Sanday (Dr Fortescue). 
74. S. SALINA (Presl.), Seaside Spurrey. 
Var. neglecta (Syme). Fairly common on muddy, 
vravelly shores. The var. is the more common form, 
