ARMERIA ALPINA WILLD. IN BRITAIN? 279 
elevations on the prea than A. alpina ever is, as far my 
knowledge goes. I am aware of a single British Agi tak 
whose average range in the Western Alps, or still less in Switzer- 
land, is as high as 8000 ft. 
Again, A. alpina prefers a penetra soil, such, for exa oe 
the Tournette, sohit sar the beautiful e of Annecy. th 
Vaceari’s La e la serpentine, du caleaire et du gneiss dans 
les Alpes Grates Orientales (1903), p. 19, we find A. alpina among 
tufted masses of pale blossoms ascend to the summit (3414 ft.). 
Mr. Lloyd Praeger Pim me out in placing the Irish ashe 
plant under maritim 
In A. alpina the chieatla appears to be distinctly longer than 
in A. maritima and its mountain variety, the flowering head is 
larger, more handsome, and a deeper colour, the calyx-tube slightly 
— the leaves obscurely three-nerved, and the whole plant more 
robust. Wherea varitima has obvio ously on ne-nerved leaves, Mr. 
Williams appears to Hee ignored the fact those of A. alpina 
are "emg aes three-nerved, or ordinarily three-nerved, according 
ree Koch, Boissier, Kerner, Dalla Torre, ssid Keller and Schinz. 
mong the authorities I have consulted, Coste alone describes the 
leaves as with one nerve. In regard to Boissier’s grouping of 
enter here, for Messrs. Williams and H. & J. Groves consider it 
unsatisfactory. is, however, a point of distinction kept up by 
Keller and Schin 
present, ra the country, I am not in a eae to dis- 
tinguish more critically what I firmly woos to be two species, 
nor have I seen recently Mr. Druce’s paper on Sea, Thrift in 
Journ. Linn. Soc. xxxv. 66; but I submit the above facts for what 
they are worth, after studying Mr. Williams’s interesting notes 
and ciao 
Those whom it may interest will find an allusion by Dr. 
Scud: re p. 143 of Le Développement des Flores dans les Alpes 
Occidentales, extracted from the “ Scientific Results” of the Bota- 
nical Congress ~ Vienna, 1905—a most ——- and able paper 
on the origin of the e Alpine flora) to Armeria ‘a alpina assoc sociated 
Empetrum nigrum 
and opt ae octopetala in forming a syoenl yer tundra in North- 
Russia. 
