HEPATICS OF CAITHNESS 125 
n a rough way be divided into the three following pretty 
distinct districts :— 
along the Sutherlandshire boundary. The district embraces 
Ord of Caithness, so far as included in Caithness—on the east, the 
Scaraben Hills (2054 ft.), Maiden Nap (1587 ft.), Morven (2318 ft.); 
and in the extreme west Ben Rha (795 ft.). These hills exhibit a 
‘county; for the most part very level, but here and there rising into 
low hills, of which, from a botanical point of view, the Dorrery 
have 
calcicolous kinds, is the ravine of Reisgill Burn, near Lybster. Of 
this district perhaps probably upwards of two-thirds are peat moors, 
the rest being mostly arable and pasture lands. 
(III) The third district, by far the smallest, but also the most 
distinct, includes the sandy links along the seashore at Sandside 
Dunnet inclai 
ay, a west and north, and at Sinclair’s Bay 
on the east. This district is indeed rather poor in hepatics but has 
an ext ing moss-flora, which contains such plants 
(Schwaeg.) ; 
Meesia trichodes Spr.; Amblyodon dealbatus P. B. 
I indicate by Roman numerals the occurrence of the plants as I 
have found them in these three districts. I give names of localities 
where I have found the respective species in only one or two places. 
These and the other indications of relative frequency can only be 
regarded as indicating in a general way the occurrence of the 
species as they have been collected by me. 
In the case of some, especially of the rarer species, I have noted 
the occurrence of fruiting specimens, but my record of these can 
hardly be regarded as complete. 
The nomenclature and arrangement are mainly those of Pear- 
son’s Hepatice of the British Isles. 
Frillania tamarisct Dum. Common (I, II, IIL).—F. fragilifolia 
Tayl. Ben Rha (I).— F. dilatata Dum. Not unfrequent where 
there are trees affording a suitable habitat; but trees are not 
abundant in Caithness (I, II), frt. 
Lejeunea serpyllifolia Lib, Frequent (I, I1).— L. patens Lindb. 
Benacheilt pare calearea Lib, Dorrery Hills (I1). 
Radula indbergit Gottsche. Dunbeath Strath, but probably 
overlooked elsewhere (II).—R. complanata Dum. Common (I, Il) 
Porella rivularis Lindb. Dirlot, Dorrery 
_Pleurozia cochleariformis Dum. Frequent 
Anthelia Juratzkana Spruce. Morven (1), frt. 
Blepharozia ciliaris Dum. Gobernuisgach, 
