176 THE DISTRIBUTION OF HEPATIC IN SCOTLAND 
PLAGIOCHILA Dum. 
PLAGIOCHILA TRIDENTICULATA Tuyl. 
P. exigua Tayl. 
Rare, and contined to the low ground of the west side of 
the country. It is rather common in several parts of the 
coast of West Inverness; is very rare in the south-west 
counties. 
Occurs as dark olive-green broad patches on trees and 
rocks in shady ravines. Generally grows unmixed with 
other species. Male plants are common; the female has 
not been seen. 
In wet shady places it occurs as Plag. exigua Tayl., which 
is only a state due to its moister position. 
N.W. Lowianps.—Ayr: Ness Glen, with Plag. spinu- 
losa, Lej. patens, and Metz. hamata, 1888 (M‘And.). 
W. HicHiuanps.—Dumbarton: Allt Dubh Uisgue, on 
rocks, R., with Harpalej. ovata (Macv.). <Argyll: Glen 
Nant, on rocks (Maev.); head of Loch Awe, on rocks in a 
few ravines, as at Falls of Cruachan (Macv.). W.Jnverness : 
Moidart, Fr. (Macv.); Ardnamurchan, F. (Macv.); Sunart, F. 
(Macv.). 
INNER HeEpripes.—Mid Inner Hebrides: Tobermory 
(Ewing) ; do. (Kenn.). 
Lower N. HIGHLANDS.—W. Ross: Allt Clachan, Loch 
Carron, R. (Maev.). 
PLAGIOCHILA PUNCTATA Tayl. 
This Atlantic species is almost confined to the west side 
of the country. Rare in the West Lowlands and absent 
from the East Lowlands. In the East Highlands it is only 
found towards its western side, extending eastward as far 
as the Trossachs and Killin, where it is rare, but becoming 
more frequent near the watershed of Argyll. It is common 
in the West Highlands, and in many places is very common. 
It is frequent in the Inner Hebrides where there is shelter, 
and in Harris in the Outer Hebrides; but the general 
absence of shelter in the islands renders it much less 
