326 THE DISTRIBUTION OF HEPATIC IN SCOTLAND 
FRULLANIA DILATATA (L.) Dum. 
One of the most generally distributed species of the low 
ground, but rare or absent in exposed districts. In the 
Lowlands it is almost confined to trees, being frequent in 
deciduous woods in the cultivated regions, and often 
common in the more sheltered coppices of the low-lying 
glens. In the valleys above 1000 ft. alt. it is very rare, 
and is scarce in such localities even with the presence of a 
fair amount of timber. It is common over most of the 
East Highlands below 1000 ft. alt., especially in the more 
sheltered parts, but is uncommon in some districts bordering 
the Moray Firth and in the valley of the Spey. Is very 
common in the West Highlands, occurring equally on trees 
and rocks when in woods. Its frequency in the Inner 
Hebrides is in proportion to the small number of trees 
there, and in the Outer Hebrides it is very rare, and has 
only been found in the planted wood at Stornoway. It is 
frequent in the North Highlands where there is sheltered 
wood, but is in general rare owing to the absence of this 
condition. It has been found in Orkney and in two 
localities in Shetland. It is rarely found above 1000 ft. 
alt., but has been found at 1400 ft. alt. in North Perth, and 
on one occasion at 2000 ft. alt. in Mid Perth. It prefers 
rather drier habitats than F. Tamarisci, and for this reason 
is frequently seen on smooth-barked trees, while the latter 
prefers those with rough bark. All our species of 
Frullania, except F. microphylla, occur also on conifers, 
though not very commonly. Perianths are usually present, 
and fruit is common, especially from December to April. 
The female plant commonly occurs in mixture with the 
male plant, which is not the case with F. Tamarisci. 
S.W. LowLanbs. — Dumfries: Brownhall nr. Dumfries, 
1840 (Cruicks.); Moffat (Johns.); Sanquhar district, F. 
(Maev.); Crichope Linn, Fr. (Maev.). Kirkcudbright: 
New Galloway (M‘And.); Glen Island (Ham.); Carsphairn 
(West); Penkill Burn, c. (Macv.); Glen Trool, c. (Maev.); 
Creetown (Maev.). Wigtown: Lochnaw (J.S.Stirling); Port- 
patrick (M‘And.); Knowe (Ewing); Glen Luce, cfr. (Maev.) ; 
Castle Kennedy, efr. (Macv.); nr. New Luce (Ewing). 
N.W. Low.ianbs.— Ayr: Mochra Hill (Ewing); nr. 
