176 ROSACEA. | POTENTIULA. 
conspicuously ciliate; bractlets linear-lanceolate, 3-4 lines long; petals 
broadly obovate or nearly orbicular, 6 lines long or more, bright. yellow : 
achenes not known. In wet meadows on the. Siskiyou Mountains near - 
Ashland Butte, Oregon: 
P. fissa Nutt.1.c. Viscidly pubescent: stems erect, branching, leafy, 
8-10 inches high: leaves 9-11-foliolate on short petioles; leaflets unequal, 
roundish or oval, deeply incised or incisely toothed; cymes narrow, few- 
flowered; sepals ovate-lanceolate, long-acuminate; bractlets much smaller, 
o{ten toothed; petals bright yellow, large, very concave, much exceeding — 
the sepals. Idaho to the Rocky Mountains. 
P.. glandulosa Lindl. Bot. Reg. xix, t. 1583. Stems erect, slender, . 
branched above, villous-pubescent, viscid toward the summit: radical. 
leaves pinnately 5-9-foliolate : leaflets ovate or roundish, those of the nearly 
sessile cauline (onvbe obovate or oblong, all deeply and usually doubly ser- 
rate-toothed and often incised: branches of the cyme elongated and rather 
loosely-flowered; sepals ovate, acute, as long as the broadly oval yellow 
petals. Eastern Washington and Brit. Columbia to South Dakota and 
New Mexico. 
P. Wrangelliana Fish. & All. Anim. Bot. Ind.Sem. Stems erect, 1-2 
feet high, glandular-pubescent : leaves pinnately 5-9-foliolate; leaflets ovate 
or rhombié-ovate, coarsely and doubly serrate: cyme dichotomously 
branched, with a short-pedicelled flower in the forks, lax, leafy-bracted ; 
sepals oval, abruptly contracted into a small almost mucronate point ; 
petals pale yellow, obovoid, scarcely equalling the calyx; stamens 25, in 
one row on the margin of the thickened disk. _ Valleys of the coast range, 
Washington to California. 
P. reflexa Greene Pitt. iii, 19. Stems erect or spreading, 1-2 feet 
high, rather slender; minutely villous-hirsute throughout and somewhat 
glandular; radical leaves 3-6 inches long, 5-9-foliolate; stipules entire; 
leaflets orbicular to oblong, coarsely and donbly serrate, an inch long or 
less: cymes open-paniculate; pedicels slender, often elongated: sepals 
narrow'y triangular, acute, 3-4 lines long; the linear-lanceolate bractlets: 
about half as long ; petals obovate, 3-4 lines long, about equalling the 
rite yellow. Common on dry open hills and plains, Washington to 
alifornia. . 2 
P. rhomboidea Rydberg Bull. Torr. Club xxiii, 248. P. glandulosa 
var. Nevadensis Watson. Sparingly villous to nearly glabrous; slightly 
if at all glandular: stems slender, 4-8 inches high, often solitary: radical 
leaves, 5-7-foliolate, ‘short petioled: stipules ovate, subentire; leaflets 
rhombic-ovate, mostly acute, serrate with acute teeth, 4-8 lines naa A 
cymes open, few-flowered pedicels stout and rather rigid a calyx sparingl 
hairy, the oblong acute lobes 2-4 lines long; bractlets linear-lanceolate, 
1-2 lines long, petals yellow, 12 lines long obovate, tardily deciduous: 
stamens 15-25; styles nearly basal, filiform. On cliffs in the high 
mountains, Washington to California and Nevada. 
* * Style terminal: disk not thickened; flowers small yellow, 
leaves pinnate or ternate. 
+ Annuals or biennials; leaflets incisely serrate, not white tomen 
tose. 
P. Monspeliensis L. Sp. 499. P. Norvegica L. Hirsute: stems stout, 
erect, 1-3 feet high, leafy, at length dichotomously branched above: 
leaves trifoliolate, mostly short petioled; stipules large, ovate, coarsely 
incised or entire; leaflets obovate or oblong-lanceolate, 1-3 inches long: 
cyme leafy and rather loose; calyx large, becoming 3-5 lines long, the” 
bractlets nearly equalling or exceeding the sepals; petals obovate, often 
emarginate, not longer than the sepals; stamens 15-20, in 2 rows; recep- 
