MR. GEYER'S ROCKY MOUNTAIN PLANTS. 219 
lands, with Hosackia Purshiana. The seedling plants have 
tawny-coloured leaves in the winter. July. (n. 467.) 
l. Fragaria Virginiana, Ehrh.—Hook. Fl. Bor. Am. 1. p. 
184. Torr. et Gr. Am. 1. p. 448. F. Canadensis, Mz. 
Has. Mountains of Spokan and Cœur d'Aleine Rivers. (n. 
612.)—On these specimens a pair of small leaflets (not 
opposite, but alternate) resembling the bracts at the base 
of the pedicels, exist below the leaflets on the petiole; and 
Mr. Geyer observes that they are common. 
1. Potentilla Norvegica, L.—Hook. Fl. Bor. Am. 1. p. 193. - 
Torr. et Gr. Am. 1. p. 436. 
Has. Meadows at Black's Fork, Upper Colorado, growing 
with Gentiana punctata. August. (n. 217.)— A common, 
but very variable species. "This specimen is tall, (a foot 
high), stout, with leaflets nearly 2 inches long. 
2. P. effusa, Dougl.—Hook. Fl. Bor. Am. 1. p. 189. Torr. et 
Gr. Am. 1. p. 437. 
Has. On an isolated calcareous peak, near the * Wind River" 
. Mountains, August. (n. 99.) and clayey hills about Fort 
en) ie, with Guttierezia Euthemia ; rare. tes Wie md : 
.. 9. P. gossypina, Nutt.—P. arachnoidea, Dougl. ot kelihi dt os 
| ig — P. effusa, y. ome Torr. et die Am. Lp : 
= Has. Fertile meadows and p in the alloy stus. Platte, E 
_ near Laramie's Fork. July. (n. 119.)—Mr. Gordon's spe- E 
` imens of this plant, from the Upper Platte, in my pos- —— — 
Session, are named by Mr. Nuttall; and they are assuredly — — 
| Quite distinct from P. effusa, with which Messrs. Torrey and - 
ons unite P. gossypina. Mr. Douglas found it in the Walla- - 
Walla, at the base of the Blue Mountains, and named. it 
| (and Dr. Lehmann, to whom the N. American Mille 
Were submitted, sanctioned the name) P. arach i i = 
=» Peer “the imperfect state of the. pecim 
"omitted in the Fiers Bo cali-Arericana- 
