108 THE DISTRIBUTION OF HEPATIC IN SCOTLAND 
MARSUPELLA PEARSONI Schiffn. M.S. 
The distribution of this recent segregate is not well 
known yet. It has been found from the southern part of 
Argyll to Shetland. It usually grows on the lower slopes 
of the hills on flat rocks in marshy ground, these rocks 
being constantly wet and frequently submerged by running 
water from the overflowing rills. On this account the 
leaves are generally partially destroyed, few being entire. 
It appears to be uncommon in the higher parts of the hills, 
but has been found up to 2800 ft. alt. Forms rather ex- 
tensive dark-green to reddish-brown patches. Fruit has 
not been observed. 
S.E. HiagHianps.—Mid Perth: Ben Lawers, 1900 (Macev.). 
N.E. HicHianps.—#. Inverness: Braeriach, alt. 2800 ft. 
(Wilson and Wheldon). 
W. HicHiuanps.—Dumbarton: Arrochar, alt. ca. 150 ft. 
(Macy.). Argyll: Kilmun Hills, 1904 (Scott); Ben 
Arthur, alt. ca. 200 ft. (Macv.); Ben Fhada, Glencoe 
(West). W. Inverness: Glen Nevis, alt. ca. 400 ft. (Macv.). 
INNER HeEpripes.—Mid Inner Hebrides: Ben More 
(Kenn.). 
SHETLAND.—E. side of Bergs of Skelbery, alt. ca. 500 ft. 
(Beeby). 
MARSUPELLA AQUATICA (Lindenb.) Schiffn. 
Widely distributed in the subalpine region from 
Wigtown to Shetland, and ascending into the alpine region 
of the Highlands to 3500 ft. alt. at least. It is rare in 
both West and East Lowlands, though frequent in the 
Kirkcudbright hills and in the Talla district of the Tweed. 
It descends in the Lowlands to 300 ft. alt. on the west side 
of the country, and to about 900 ft. on the east. It has 
not been found in Fife, nor near the coast of the East 
Highlands, with the exception of what appears to be a well- 
marked subalpine region near the junction of Kincardine 
and Aberdeen. Through the hilly districts of the entire 
Highlands it is doubtless a common species, though few 
specimens have been noted from the North Highlands. 
Among the hills of the East and West Highlands and 
