288 BRITISH PLANTS 
Linnei, Oxytropis uralensis, Gnaphalium supinum, Vero- 
nica alpina, Juncus trifidus, Carex vaginata, Salix 
Myrsinites, S. reticulata, Athyrium alpestre, Azalea pro- 
cumbens, Arctostaphylos alpina, Betula nana (1 to 2 feet. 
high). 
Only one alpine is confined to south Britain—Lloydia 
serotina—tound in one or two places on the Snowdon 
range. 
Many species of Saxifraga are found on the mountains 
of west or south-west Ireland, and nowhere else in the 
British Isles. Of these 8S. wmbrosa (London-pride), widely 
scattered, and S. Geum, confined to Kerry and Cork, are 
members of the Lusitanian flora (see p. 213); S. hirsuta 
is found only in Kerry and Cork, 8. elegans only in Kerry ; 
S. decipiens extends from western Ireland to western 
Scotland and north Wales; S. cespitosa occurs very 
rarely in Kerry, Carnarvonshire, Westmorland, and 
Aberdeen. Arenaria ciliata has its only British station 
in the Ben Bulben range, west Ireland. 
Other alpines found more or less abundantly in most 
mountainous districts throughout the British Isles are : 
Thalictrum alpinum, Draba incana, Cochlearia alpina, 
Thlaspi alpestre (not in Ireland), Silene acaulis, Cerastium 
alpinum (not in Ireland), Arenaria verna, Dryas octopetala, 
Alchemilla alpina, Saxifraga aizoides (rills), S. oppositt- 
folia, S. hypnoides, S. stellaris (rills), Sedum Rhodiola 
(the only succulent alpine plant in this country), Anten- 
naria dioica, Saussurea alpina, Polygonum viviparum, 
Oxyria reniformis, Salix herbacea, Empetrum nigrum, 
Poa alpina, Juniperus communis var. nana, Asplenium 
viride, Dryopteris montana, Cystopteris fragilis. Confined 
to northern England and Scotland are: Potentilla Sibbaldi, 
Epilobium alsinefolium, E. alpinum, Linnea borealis, 
Galium boreale, Salix Lapponum. 
An interesting feature of the alpine vegetation is the 
presence of a number of plants found also on the seashore. 
Thus, Cochlearia grenlandica, Silene maritima, Armeria 
maritima, and Plantago maritima are almost as common 
on damp alpine ledges as on the wind-swept face of a sea- 
cliff. In other cases the plant is represented by a variety, 
and not the type—e.g., Sagina maritima var. alpina. 
Plants whose home is in the mountain may extend down 
to the sea-coast—e.g., Draba incana and Oxytropis ura- 
