SKETCH OF THE FLORA OF THE PROVINCES 31 
commonest species, Vardia scalaris, the rarity of the very 
common Diplophyllum albicans, and especially in the 
genus Frullania. 
For the whole Dominion of Canada, the proportion of 
species in common with Scotland appears to be rather 
higher, about 71 p. ct. When we come to California 
the proportion is reduced to 47 p. ct. The two latter 
percentages will no doubt considerably alter when the 
floras have been more thoroughly examined. 
SKETCH OF THE FLORA OF THE PROVINCES 
West LOWLANDS 
THE region of cultivation in this district is mostly repre- 
sented in the south of Dumfriesshire and the low-lying 
parts of Ayrshire, and in the Clyde valley below Lanark, 
the larger part of the area being moorland or hill-pasture. 
Oats cease to ripen at about 800 ft. in the Nith valley, and 
at the same altitude in general in that of the Clyde, the 
highest noted being at 850 ft. at Crawford. In this region 
to about 900 ft. are also found the linns or glens with 
mixed deciduous woods, except in the higher district of the 
Clyde, where natural wood is absent. Where rock is 
exposed in the uncultivated districts of this region, sub- 
alpine species are occasionally frequent; especially is this 
the case in the granite districts. In the cultivated region 
hepatics are very scarce. In fallow ground are found 
Riccia glauca, R. sorocarpa, Lwnularia, Marchantia, Pellia 
epiphylla, and Fossombronia pusilla. On the side of 
ditches, in addition to the Pellia, are Blasia pusilla, Hap- 
lozia crenulata var. gracilluma, Calypogeia Trichomanis, 
C. fissa, C. arguta rarely, Cephalozia bicuspidata, 
Anthoceros punctatus, A. levis. On moist banks these 
species are also found, with Nardia scalaris, Haplozia 
erenulata, Lophozia bicrenata, L. ventricosa, L. Floerkia 
and L. barbata, Cephaloziella Starkii, Scapania compacta, 
and S. cwrta on drier ground. In the woods, excluding 
those at the side of linns, there are very few hepatics, 
Frullania dilatata, Metzgeria furcata, and Lophocolea 
