DICOTYLEDONES. 25 
144. C. InTeRMEDIA (Hoftm.) 
Bog, Stove ; Fidge, Swanbister (Dr Boswell). 
145. C. AUTUMNALIS (Linn.), Autumn Water- 
starwort. 
Loch Skail, small loch in Papa Westray, and St. 
Mary’s Loch, Holm; Wasbister, Rousay (G. W. 
Scarth). 
OrpeR XVIII—CRASSULACE. 
Genus LXIV.—SEDUM (Linn.) 
146. S. RoseUM (Scop.), Stonecrop. 
Common on cliffs— Hoy Hill and Rousay. 
147. S. ackE (Linn.), Biting Stonecrop. Rare. 
This plant is found only on the links, Hoxa, where 
it is scarce. 
OrpeR XIX.—SAXIFRAGACE. 
Genus LXV.—SAXIFRAGA (Linn.) 
148. S. opposITIFOLIA (Linn.), Mowntain Saxifrage. 
Rare. 
Hoy Hills. I found one plant on the north-west 
side of Ward Hill. Crags on Ward Hill, Hoy (Aug. 
1881, Col. H. H. Johnston, C B.) 
149. S. SrELLARIS (Linn.), Sturry Suxifraye. Rare. 
On rocks near Rackwick, Hoy (Dr Duguid). My 
specimens were gathered by Mr G. W. Searth in 
gullies near Meadow of Kame in Aug. 1908. 
