314 NORTH AMERICAN FLORA [VoLUME 22 
broad; bractlets linear to lanceolate, 4-5 mm. long; sepals lanceolate, 5-6 mm. long; petals 
obcordate, 7-8 mm. long; stamens 20; pistils many; styles filiform. 
Type collected at the Dalles, Oregon, in 1869, Harford & Dunn 1144 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION : Washington to Californiaand Montana. 
41. Potentilla Hallii Rydb. Bull. Torrey Club 28: 176. 1901. 
Perennial, with a short rootstock or caudex; stem about 3 dm. long, ascending or 
decumbent, sparingly villous-hirsute, terete and light-green ; leaves mostly digitately 5- 
foliolate, or the upper 3-foliolate or simple, more or less reduced ; basal petioles 3-5 cm. long, 
villous-hirsute; leaflets obovate, 1-3 cm. long, coarsely serrate-crenate, green and slightly 
hairy above, paler and hirsute and sparingly puberulent-tomentulose beneath ; upper stipules 
ovate, entire, 12-15 mm. long; cymerather open ; hypanthium and calyx hirsute, more or less 
tinged with purple; bractlets ovate-lanceolate, about one third shorter than the ovate acute 
sepals; petals yellow, about 5 mm. long, scarcely exceeding the sepals; stamens 20; pistils 
many; styles filiform. 
TYPE LOCALITY : Pine Ridge, Fresno County, California. _ . ; . 
DISTRIBUTION: Sierra Nevada and San Bernardino Mountains, California ; a more hairy form 
in Washington. 
42. Potentilla lasia Rydberg, sp. nov. 
Perennial, with a short cespitose caudex; stems ascending or decumbent at the base, 
densely pubescent with spreading hairs; basal leaves 5-7-foliolate; petioles 3-6 cm. long, 
densely hirsute with spreading or reflexed hairs; leaflets 2-3 cm. long, oblanceolate, densely 
hirsute on both sides, green above, grayish beneath, cut-toothed with rather few ovate- 
oblong teeth ; lower leaflets similar, the upper reduced, sessile and 3-foliolate ; cyme small 
and contracted; hypanthium hirsute-villous, in fruit 8-9 mm. broad; bractlets oblong- 
lanceolate, 4-5 mm. long; sepals ovate, 5-6 mm. long; petals orbicular, emarginate, 6-7 
mm. long; stamens 20; pistils many; styles filiform. 
Type collected in Bear Valley, San Bernardino Mountains, S, B. Parish 3252 (herb. N. Y. Bot. 
Gard.). 
DISTRIBUTION : Mountains of southern California. 
J 
43. Potentilla oaxacana Rydb. Mem. Dep. Bot. Columbia 
Univ. 2: 206. 1898. 
Perennial, from a stout tap-root; stem 4-5 dm. high, rather densely pilose, ascending, 
few-leaved ; basal leaves not very thick, rather densely villous-pilose, less so on the upper 
surface; petioles 5-7 cm. long, striate, silky-villous; leaflets 5, broadly obovate, coarsely 
crenate, about 5 cm. long, strongly veined; stem-leaves smaller, with 3 leaflets, the lower 
short-petioled, the uppermost sessile; lower stipules lanceolate, more or less scarious, the 
upper broadly ovate, herbaceous, and often toothed; cyme rather open; flowers about 15 
mm. in diameter; hypanthium pilose; bractlets oblong, nearly equaling the ovate sepals; 
petals yellow, obovate, exceeding the sepals by fully one half; stamens 20-25. 
TYPE LOCALITY: Cuatro Venados, Oaxaca, Mexico. 
44. Potentilla Goldmani Painter, sp. nov. 
Perennial, with a thick woody caudex; stems erect, about 3 dm. high, pubescent with 
spreading whitish hairs intermixed with short glandular ones; basal leaves several, digitately 
5-foliolate ; petioles 10 cm. long, pubescent like the stems; stipules lanceolate, attenuate, 
pilose with white hairs; leaflets obovate or oblong-oblanceolate, crenate with a tip of white 
hairs at the end of each crenation, 2-3 cm. long, 10-15 mm. wide, rounded at the apex, 
cuneate at the base, green, pilose and glandular-atomiferous,above, pilose beneath, tomen- 
tulose on the primary veins; lower stem-leaves trifoliolate, similar to but smaller than the 
radical leaves, upper ones subsessile with toothed or entire leaflets; cyme open, rather 
few-flowered ; hypanthium and calyx pilose and atomiferous ; bractlets oblong, acute, about 
5 mm. long; sepals ovate, acute, about equaling the bractlets; petals yellow, broadly ob- 
cordate, about 7 mm. long and as broad; pistils many; styles filiform; stamens about 20. 
Type collected on the northwest slope of Mt. Zempoaltepec, Oaxaca, 2400 to 3000 m. altitude, 
July 10, 1894, 2. W. Nelson & E, A. Goldman 691 (type in U. S. Nat. Herb. no. 569374.) 
