PLANTS OF THE FAROE ISLANDS 39 



Hornemann. Of course if placed under Are?taria the name 

 rubella (published in Parry's " Second Voyage ") is later than 

 that of " Fl. Danica." 



Summing up the numbers, there are in the Faroes but not 

 in Shetland 49, not in Orkney 53, not in Caithness 41, and not in 

 the Outer Hebrides 43. 



Comparing the altitudes in the Faroes and in Scotland : — 



Sagina nivalis. — Rocky flat, Bordo, at 600 m. Lowest altitude in 

 Scotland, 3100 feet. 



Cerastium trigynum, about 2200 feet. Scotland, 2700 feet. 



" Potentilla verna, Z. (P. maculata, Pourr.)." — No definite height 

 given. Scotland down to 400 feet. 



Sedum villosum. — " Both in the mountain-plateaux and the 

 lower regions." Scotland down to 50 feet or less. N. 

 England 600 feet. 



Saxifraga caespitosa. — In the Faroes this is found not only on the 

 mountains but on the lower regions, and in Iceland it descends 

 to sea-level, while in Scotland it is one of the species found only 

 above 2000 feet. 



Saxifraga nivalis. — '" Sub-alpine latitude, i.e. lower regions, and 

 exceptionally on the mountain-plateaux." 1300 feet in Bord5. 

 In Scotland, 1200 feet Skye (Roy) ; Perth, probably at under 

 2000 feet (White); 1500 feet in Westmoreland (Baker). This 

 shows, as with ccBspitosa, the difference between Faroe and 

 Scotland. 



Saxifraga rivularis. — Only on the mountain-plateaux. In Scotland 

 I can find no record below 2700 feet. 



Pyrola minor. — 1270 feet, associated with Silene acaulis, Luzula 

 spicata, Alchemilla alpina, and Sibbaldia, " an extremely pecu- 

 liar habitat for the plant." ^ In Scotland it grows up to 2900 

 feet (Marshall), and 3700 feet (White). 



Veronica alpina. — Mountain-plateaux only. Down to 1200 feet in 



Perth (White). 

 Veronica fruticans. — Mountain-plateaux only. Down to 1200 feet 



in Perth (White). 

 Bartsia alpina. — Mountain-plateaux only. England, Humber 900 



feet (Watson). Scotland, in Perth at 1600 feet (White). 



Juncus biglumis. — At 1140 feet and 2000 feet. Scotland, at 2500 

 feet in Perth (White); "down to 2000 feet" (Dickie). 



Luzula arcuata. — Mountain-plateaux only. In Scotland, Aberdeen 

 and Easterness at 3000 feet. 



1 Ostenfeld, I.e. 999. 



