Upbam.] 
148 
[May 21, 
in the United States, this being by Mr. R. I. Cratty in Emmet 
county, northern Iowa. Two very rare species, of mainly north- 
ern range, occur near the east border of the Red river basin, namely, 
Subularia aqnatica, L., found in Eagle lake on the Canadian Pacific 
railway near Rainy lake ; and the equally noteworthy Littorella la- 
cnstris, L., detected by Prof. L. H. Bailey at Basswood lake on the 
northern boundary of Minnesota. Specimens of Rosa Engelmanni, 
Watson, collected by Professor Bailey at Vermilion lake in northern 
Minnesota, were at first referred by Mr. Watson to R. acicularis, 
Lindl., known on this continent only from Alaska and from Fort 
Simpson on the Mackenzie, but they are now referred to this new 
species, as described in the sixth edition of the Manual ; and Rev. 
E. J. Hill reports that this is the more common form of rose there. 
The known range of the boreal and sub-arctic Achillea multiflora, 
Hook., not previously recorded in the United States, is extended 
by my observations into North Dakota, this species being frequent 
in the valley of the Pembina at the fish-trap and the springs near 
Walhalla, and on the North branch of Park river near Milton. I 
also found it plentiful at the Elbow of the Souris river in Mani- 
toba. 
Long lists of familiar species, abundant in the floras of the East- 
ern and Southern States, but reaching their western and northern 
boundaries along the Red river of the North, might be given ; but 
they yj ould probably be less interesting to botanists in these portions 
of the country than the list that follows, noting the principal spe- 
cies of western range, common on the plains and often in the Rocky 
Mountains and to the Pacific, which attain their eastern limits 
within the Red river basin. 
WESTERN SPECIES EXTENDING TO THE BASIN OF THE RED RIVER. 
Anemone patens, L., var. Nuttalliana, 
Gray. 
Lesquerella Ludoviciana, Watson. 
Erysimum asperum, DC. 
parviflorum, Nutt. 
Polanisia trachysperma, Torr. & Gray. 
Malvastrum coccineum, Gray. 
Linum rigidum, Pursh. 
perenne, L., var. Lewisii, Eaton 
& Wright. 
Petalostemon villosus, Nutt. 
Astragalus caryocarpus, Ker. 
adsurgens, Pall, 
hypoglottis, L. 
Astragalus gracilis, Nutt. 
aboriginum, Richardson, 
flexuosus, Dougl. 
Oxytropis monticola, Gray. 
Lamberti, Pursh. 
splendens, Dougl. 
Glycyrrhiza lepidota, Nutt. 
Vicia Americana, Muhl., var. linearis, 
Watson. 
Potentilla Pennsylvanica, L., var. stri- 
gosa, Lehm. 
Potentilla Hippiana, Lehm. 
efifusa, Dougl. 
Rosa Arhansana, Porter. 
