88 
BOTAisnr. 
or alpine species. Greenland, Labrador, and the Arctic Coast to Behring 
Strait and southward in the Rocky Mountains to Colorado. Found in the 
Uintas ; 11,000 feet altitude ; August. The specimens are 3- (a single one 
pinnately 5-)foliolate. 215 Parry and 172 Vasey are the same, while 217 
Parry, 159 and 160 Hall & Harbour, and 164 Yasey, which are digitately 
5- (sometimes pinnately 7-)foliolate, and also larger, would seem to connect 
this species and the last. (335.) 
PoTENTiLLA GRACILIS, Dougl. Stem crcct, tall, (2° high,) villous- 
pubescent ; leaves palmately 5-7-foliolate, the radical on long petioles, the 
cauline (1-2) often subsessile ; leaflets oblanceolate, deeply pinnatifid-serrate 
with lanceolate spreading teeth, canescently tomentose beneath ; stipules 
large, ovate-lanceolate, acuminate, entire or coarsely toothed ; cyme fastigiate, 
somewhat crowded ; peduncles strict, becoming elongated ; petals obcordate, 
exceeding the ovate-lanceolate acute villous-tomentose sepals; styles slender. — 
Somewhat resembling P. pulcherrima^ but stouter, more strictly and densely 
corymbed, the leaflets more deeply serrate, more silky-pubescent on the upper 
surface, and very rarely subpinnate. From Washington Territory to the 
plains of the Saskatchewan ; Wyoming Territory (Frt^mont.) Near streams 
in the Pah-Ute and Shoshone Mountains and Ruby Valley, Nevada, and in 
the Wahsatch ; 6,000 feet altitude ; June, July. (336.) 
Var. Stems low, (6-9' high,) ascending ; canescently silky-tomentose. 
This is probably Nuttall's P.fastigiata. Diamond Valley, Nevada. (337.) 
Var. FLABELLiFORMis, Nutt. Tall; leaves 5-9 -foliolate ; leaflets crowded, 
deeply pinnatifid, the lobes linear-lanceolate. — Saskatchewan region, Oregon, 
and Northern California. Havallah and East Humboldt Mountains, Nevada ; 
6,000 feet altitude. (338.) 
PoTENTiLLA NuTTALLii, Lehm. (P. Hgida^ Nutt.) Pubescent with 
short appressed hairs "and minutely glandular," not canescent ; stem erect, 
stout ; leaves palmately 5-7-f()liolate, leaflets cuneiform-oblong, deeply pinna- 
tilid-tootlied, segments lanceolate; stipules broadly ovate, mostly entire; 
petals l)r()a(lly obcordate, exceeding the ovate-lanceolate sepals. — Tall (18-30' 
high) and rather stout ; Potentilla (1) of Bourgean, 179 Anderson, 98 Bridges, 
5036 Bolander, &c., vai y iiiir in some respects, are apparently the same, though 
the glandular cliaracter of the pubescence is wanting in all. From Nebraska 
and the Saskatchewan to Oregon and California. On stream banks in 
