176 KOSAOE^. POTEHTILLA. 



conspicuously ciliate; bractlets linear-lanceolate, 3-4 lines long; petals 

 broadly obovate or nearly orbicular, 6 lines Ions; or more, bright yellow: 

 achenes not known. In wet meadows on the Siskiyou Mountains near 

 Ashland Butte, Oregon. 



P. flssa 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 iucisely toothed ; cymes narrow, few- 

 flowered ; sepals ovate-lanceolate, long-acuminate ; bractlets much smaller, 

 often toothed'; petals bright yellow, large, vei-y concave, much exceeding 

 the sepals. Idaho to the Rooky Mountains. 



P. glandnlosa LIndl. Bot. Eeg. 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 leaves obovate or oblong, all deeply and usually doubly ser- 

 rate-toothed and often incised : branches of the cyme elongated' and rathqr 

 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, glandfiilar-pubescent : leaves pinnately 5-9-foliolate; leaflets ovate 

 or rhombic-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 doubly serrate, an inch long or 

 less: cymes open -paniculate ; pedicels slender, often elongated: sepals 

 narrowy triangular, acute, 3-4 lines long; the linear-lanceolate bractlets 

 about half as long ; petals obovate, 3-4 lines long, about equalling the 

 sepals, yellow. Common on dry open hills and plains, Washington to 

 California. 



P. rhomboidea Rydberg Bull. Torr. Club xxiii, 248. P. glandulosa 

 ■ear. Nevadensis Watson. Sparingly villous to nearly glabrous ; slightly 

 if at all glandular': stems slender, 4-8 inches high, often solitary: radical 

 leaves, 5-7-foholate, short petioled: stipules ovate, subentire; leaflets 

 rhombic-ovate, mostly acute, serrate -with acute teeth, 4-8 lines long: 

 cymes open, few-flowered pedicels stout and rather rigid ; calyx sparingly 

 hairy, the oblong acute lobes 2-4 lines long; bractlets linear-lanceolate, 

 l-21ir.es long, petals yellow, 12 lines long obovate, tardily deciduous; 

 stamens 15-2o; 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- M«nspeliensis L. Sp. 499. P. Nonegica L. Hirsute : stems stout, 

 erect, 1-3 feet high, leafy, at length dichotomously branched above: 

 leaves trifoholate, 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 

 emargmate, not longer than the sepals ; stamens 15-20, in 2 rows ; recep- 



