1907] Fernald,— Soil Preferences of Alpine Plants 167 
Saxifraga aizoides. Shepherdia canadensis. 
Parnassia Kotzebuei. Primula farinosa, var. macropoda. 
Dryas integrifolia. df mistassinica. 
* — Drummondii. Gentiana Amarella, var. acuta. 
Astragalus elegans. Pinguicula vulgaris. 
S Blakei. Erigeron hyssopifolius. 
Hedysarum boreale. Artemisia canadensis. 
Although only 27 of these 105 (94 + 11) species characteristic of 
Group II occur on Willoughby Cliffs and 23 of them on the cliffs of 
Smuggler’s Notch, 102 of the 105 are found on the cliffs of eastern 
Quebec where they are the characteristic vegetation. 
The great tableland and cañon-walls of Mt. Albert, although ex- 
posing many square miles of alpine region, have a comparatively 
meagre flora; but the few species which there abound are of the 
greatest interest to the eastern botanist, for with but few exceptions 
they are quite unknown upon any other mountains or cliffs in eastern 
North America. The plants which are strictly localized in the rock- 
crevices and on the talus-slopes of Mt. Albert make up, so far as yet 
determined, a flora of only 21 species (8.15 per cent. of the 258 alpine 
and subalpine plants) but this flora includes the very distinctive 
Adiantum pedatum, var. aleuticum. Arenaria ciliata, var. humifusa. 
Cryptogramma densa. “ sajanensis. 
Polystichum scopulinum. " arctica. 
Deschampsia caespitosa, var. alpina. Statice sibirica. 
Danthonia intermedia. Solidago decumbens. 
Festuca altaica. Artemisia borealis. 
Salix desertorum. kc " var. Wormski- 
*  ehlorolepis. oldii. 
Lychnis alpina. Cirsium muticum, var. monticola. 
The area indicated as Group Ia, the northern slopes and crests of 
Mt. Albert, while supporting many plants (26) otherwise confined to 
areas of Group I and several (11) otherwise known only from areas 
of Group II, has by itself a scarcely noteworthy flora, only 5 plants 
(1.9 per cent. of our alpine species). These plants — Carex lagopina, 
Luzula spicata, var. tenella, Sagina saginoides, Ranunculus pygmaeus 
and R. Allenii — are all technical species and varieties and it is not 
improbable that further exploration will show them to belong pri- 
marily to either Group I or II. 
The plants referred to in the preceding paragraphs represent a 
considerable proportion of our alpine and subalpine species and 
strongly marked varieties which, when they grow upon exposed sum- 
mits and slopes and cold cliffs, are confined very definitely to certain 
