1913-14.] BOTANICAL SOCIETY OF EDINBURGH 257 



and Gynoaurus cristatus, Linn.; all of which are repre- 

 sented by small and stunted forms compared to those of 

 richer soils and more sheltered situations. 



Among plants of more occasional occurrence may be 

 mentioned Solidago Virgaurea, Linn.: Hypericum pul- 

 chrum. JAnn.: Cera-stium trivial?. Linn.; Gnicus ar\ 

 Hotmi. : On. palustris, Hotrm. and On. lanceolatus. Hoffm. 



Wet Moor. — In damper places Calluna is absent, and 

 an association is found comprising Erica Tetralix, Linn. ; 

 Molinia coerulea, Moench : Juncus effusus, Linn.: J. arti- 

 culates, Linn.; J. squarrosus, Linn.; 8t bid 

 Linn.: Ranunculus Flammula. Linn. ; PedictUaris palus- 

 tris, Linn.: Viola palustris, Linn.; and Oarum verticiL- 

 latum. Koch. 



Where damp moor merges into actual bog Sphagnum is 

 abundant, and is usually associated with Drosera rotundi- 

 folia, Linn.; Pinguicula vulgaris, Linn.; Xarthccium 

 ossifragum, Huds. \ Pa/rnassia palustris, Linn.; and t 

 species. 



In peat bogs Eriophorum polystachion, Linn.; and 

 Varices are commonly predominant. 



Water-Courses. — The hillsides are everywhere furrowed 

 by burns and little rills, the sides of which are almost 

 invariably decked with yellow clusters of Saarifraga 



: laJes, Linn., while deeper gullies afford shelter for 

 stunted forms of Betula aJUba, Linn.: Pyrus Aucuparia, 

 Gaertn. ; Cor~>i< hi* AveUa/na, Linn. : and Salix aurita. Linn. : 

 accompanied by Vacci/niurn Myrtillus, Linn.; Teucrium 

 Seorddonia, Linn.: and Alchemilla vulgaris, Linn. 



Green Moor. — Although large portions of the moorland 

 vegetation derive their distinctive character from the 

 dominance of Calluna vulgaris, Salisb.. there is. neverthe- 

 less a considerable extent of ground where this plant is 

 present only in small quantities or else is entirely absent. 

 Here coarse moorland grasses, rushes, and sedges abound, 

 interspersed with the softer herbage of the hill-pastures. 



Hilltops. — Such an association as that just alluded to 

 is found on the higher slopes of the hills forming the 

 watershed of the Inverchaolain Glen. Along the top of 

 the ridge, on the eastern side, where the elevation is from 

 1500 to 1700 feet, the heather, where it does exist, is short 



