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| Geographical Distribution of Indigenous Plants. 57 
36. Poa laxa. 
37. Festuca ovina. 
38. Triticum violaceum. 
39. Aira atropurpurea. 
40. Hierochloa alpina. 
These forty species comprise all those found in our Alpine region ; 
and there are but nine species found here, which are not also found in 
Kurope. These are as follows : 
Nabalus nanus. 
Vaccinium czspitosum. 
Salix cutleri. 
. Calamagrostis pickeringii. 
e Arenaria greenlandie¢a. 
Geum radiatum, var. Peckii. 
Solidago thrysoidea. 
Arnica mollis. 
Nabalus boottii. 
The first, though not occurring in Europe, is an Alpine and 
Arctic form, and has been found in Greenland. Gewm radiatum is a 
native of the high mountains of Carolina, and the variety only is 
a northern Alpine form.* Solidago thrysoidea, is very near 
European form of S. Virg-aureat (also found in America), and may 
be a geographical variety. Vaccinium cespitosum is found in Labra- 
dor, and as far north as Alaska. The few remaining may be forms 
which have been developed from others, on account of the struggle for 
existence which ensued when left on the mountains during their re- 
turn to the north at the close of the glacial epoch. 
The, second list consists of sub-Alpine and other species, having a 
north or northwestward range ; and the distribution of these admits of 
the same explanation as No. I. 
List No. IL. — Sub-Alpine and other species, having a north or 
northwestward range. 
Anemone nemorosa. 
Anemone (Hepatica) triloba. 
Ranunculus repens. 
Coptis trifoliata. 
Acta spicata, var. rubra. 
Cardamine pratensis. 
Arabis petra. 
Arabis hirsuta. 
Arabis perfoliata. 
_ Barbarea vulgaris. 
Erysimum cheiranthoides. 
Draba incana. 
Draba nemorosa. 
Viola selkirkii. 
Viola canina, var. sylvestris. 
Arenaria lateriflora. 
Arenaria peploides 
Stellaria longifolia. 
Stellaria longipes. 
- Stellaria borealis. 
Stellaria humifusa. 
* Gray’s Manual, p. 153. 
Cerastium arvense. 
Sagina nodosa. 
Lepigonum (Spergularia) rubrum. 
Lepigonum salinum. 
Lepigonum medium. 
Hypericum mutilum. 
Geranium robertianum. 
Oxalis acetosella. 
Astragalus alpinus. 
Oxytropis campestris. 
Vicia cracea. 
Lathyrus maritimus. 
Lathyrus palustris. 
Spirzea salcifolia. 
Spireea aruncus. 
Agrimonia eupatoria. 
Dryas integrifolia. 
Geum macrophyllum. 
‘Geum strictum. 
Geum rivale. 
Potentilla Norvegica. 
+ Ibid, p. 241. 
