CATALOGUE. 
87 
the segments linear. — East Humboldt Momitains," Nevada ; 9,000 feet alti- 
tude ; July. (330.) 
Var. PINNATISECTA. Silkj-pubcscent ; leaves pinnate, leaflets cuneate- 
ovate or oblong, pinnatelj lobed, the segments oblong. — This approaches and 
may be the same as P. Plattensis, Nutt., which however was collected by him 
on the plains of the Platte, while these specimens, as well as somewhat simi- 
lar ones from Colorado and the Sierras (161 Hall & Harbour, 165 Vasey, 
5084 Bolander) are decidedl}^ alpine. P. Soongarica, Bunge, scarcely differs 
from some of these specimens. East Humboldt Mountains, Nevada, and on 
the Wahsatch and Uintas ; 10-11,000 feet altitude; July, August. (331.) 
A still more alpine form of this variety, more densely pubescent and with 
smaller and more crowded leaflets, was collected in the Clover Mountains, 
and in the Uintas; 11-12,000 feet altitude; August, September. (332.) 
PoTENTiLLA PULCHEEEiMA, Lclim. (P. Pennsylvanica, var. imlclierrima^ 
T. & G.) Stem ascending, villous ; leaves 7-9-foliolate, upper ones 5-folio- 
late, leaflets crowded or even digitate, elliptic, equally serrate, appressed- 
pilose above, white-tomentose beneath ; stipules ovate, acute, entire ; flowers 
upon slender pedicels in a loose corymbed panicle ; petals obcordate, longer 
than the acuminate green sepals ; styles slender, not fleshy nor thickened at 
base. — Stems tall (2° high) and slender, with 1-2 leaves, few from one root, 
somewhat purplish; leaflets 1-3' long; flowers bright orange, in an open pan- 
icle ; sepals not tomentose. This species has been considered a variety of 
P. Pennsylvanica^ but is distinguished by its long slender styles and its much 
looser panicles. If reduced, it must be referred rather to P. nivea, as Penn- 
sylvanica to sericea. Collected by Drummond in the Rocky Mountains, lati- 
tude 52-56°. East Humboldt Mountains, Nevada, and Uintas; 6,500-8,000 
feet altitude; July. (333.) Some of the specimens collected have the 
leaves perfectly digitate ; evidently the same as the last, and sometimes grow- 
ing with it. From the East Humboldt Mountains, Nevada, and the Wah- 
satch ; 5,500 feet altitude ; June, July. (334.) 
PoTENTiLLA NIVEA, L. Villous or tomentosc ; stems ascending, few- 
flowered ; leaves mostly radical, palmately 3- (rarely 5-)foliolate ; leaflets oval 
or obovate-cuneiform, pinnatifid, toothed or incised, silky-hirsute or nearly 
glabrous above, canescent-tomentose beneath ; stipules lanceolate, entire ; 
petals broadly obcordate, longer than the acute calyx-segments. — A low arctic 
