CATALOGUE. 113 
PorenTILLA Puattrensis, Nutt—Sparingly covered throughout with 
an appressed silky pubescence, low, 4-8’ long, branching from the root; 
leaves 2-4’ long, pinnate, with 11-13 leaflets, each of which is cuneate in 
outline, and deeply cleft into 5-7 linear lobes; flowers in an open cyme, 
on long, slender pedicels, less than 4’ in diameter, bright yellow; bractlets 
half shorter than the calyx-lobes; carpels rather indefinite, but about 30; 
styles filiform and terminal—Twin Lakes, Colorado (346, 377). 
PoTENTILLA GRACILIS, Dougl—Colorado (368, 372); Utah. 
Var. r1g1DA, Watson.—A larger and more villose form, with loose 
inflorescence, and larger, more veiny leaves. Same variety also from Utah. 
PoTeENTILLA DissEcTA, Pursh.—Low, alpine, villose, with soft, spreading 
hairs, or glabrous, usually decumbent, 3-10’ long; leaflets 3-7, pinnate or 
digitate, glaucous, cuneate-oblong, serrate or even pinnately cleft, with the 
divisions tipped with long, whitish hairs; receptacle very villous; style 
filiform, terminal.—Colorado (371, 378). 
PoTENTILLA HUMIFUSA, Nutt.—Spreading, herbaceous, perennial; leaves 
densely white tomentose on the under surface, greener and villose on the 
upper surface; leaflets 3-5, cuneate-oblong, with 3-5 rounded teeth at the 
apex of each leaflet; stems few-flowered, 3-4’ long; calyx-lobes larger than 
the bractlets; both calyx and bractlets densely villose; petals 2” long; 
styles terminal, filiform.—Colorado (365). 
PoTenTILLA NIvEA, L.—Colorado (366). 
Porentitita Tuurpert, Gray (Pl. Nov. Thurb. p. 318).—Herbaceous, 
perennial, 1-2° high, ascending, loosely villose, with long, spreading hairs; 
leaves digitate, upper sessile or nearly so, lower petioled, commonly 5-, 
sometimes 7-foliolate; leaflets obovately-cuneiform, regularly, deeply, and 
sharply serrate, lower surface canescent and villose gray or white, upper 
puberulent and green (smoother when old); stipules lanceolate or ovate, 
united to the petiole for one-fourth their length; bractlets lanceolate, acute, 
about as long as the sepals, though somewhat narrower, more or less 
villose; petals deep purple, broadly obcordate, about as long as the sepals; 
style terminal; carpels glabrous; disk thickened somewhat, 5-angled, with 
an inner circle of 5 stamens, with rather fleshy filaments inserted (one) 
on each angle; outer stamens with more filiform filaments; receptacle 
8 BOT : 
