Part 4, 1908] ROSACEAB 345 
approximate, broadly cuneate, usually 3-toothed at the apex, 1 cm. long or less, dark-green 
and glabrous or ciliate towards the apex; stem-leaves 5-foliolate or ternate; stipules ovate, 
5-7 mm. long; cymes 4-10-flowered ; hypanthium strigose, in fruit about 5 mm. broad ; 
bractlets linear-lanceolate, 3 mm. long; sepals lanceolate, acute, 4-5 mm. long; petals 
obovate, 5 mm. long; stamens about 20; pistils many; styles filiform. 
TYPE LOCALITY: Parks of the Uintahs [Utah]. 
DISTRIBUTION : Central and north-eastern Utah. 
153. Potentilla wyomingensis A. Nelson, Bull. Torrey 
Club 27: 32. 1900. 
Potentilla monidensis A. Nelson, Bull. Torrey Club 27: 266. 1900. 
Perennial, with a woody tap-root and cespitose caudex; stems 1-2.5 dm. high, stri- 
gose, erect or ascending; basal leaves crowded on the crown, pinnate, with 7-19 leaflets, 
white silky-strigose when young, sometimes glabrate in age; leaflets 1 cm. long or less, 
the upper pinnatifid, the lower 3-5-fid with linear or linear-oblong divisions ; cymes irregu- 
lar, open, 3-9-flowered; pedicels ascending ; hypanthium hirsute-strigose, in fruit 5-7 mm. 
broad; bractlets small, oblong-linear, 2-3 mm. long; sepals ovate-lanceolate, acuminate, 
4-5 mm. long; petals broadly obovate, retuse, 6-8 mm. long; stamens 20; pistils 15-20; 
styles filiform. 
TYPE LOCALITY : Grassy slopes near the highest summits of Seminole Mountains, Wyoming. 
DISTRIBUTION : Mountains of Wyoming, Montana, and Idaho. 
154. Potentilla ovina J. M. Macoun, Can. Rec. Sci. 6: 464. 1896. 
Potentilla diversifolia pinnatisecta §. Wats. Bot. King’s Expl. 87. 1871. 
Potentilla pinnatsecta A. Nelson, Bull. Wyo. Exp. Sta. 28: 104. 1896. 
Cespitose perennial, with a short caudex; stems mostly erect or ascending, usually less 
than 1 dm. high, strigose, with 2 or 3 reduced leaves, 3-6-flowered ; stipules ovate, lanceo- 
late, acute; basal leaves crowded, 24 cm. long, appressed-hoary, especially when young, 
pinnate, with 7-11 crowded leaflets; leaflets deeply cleft into oblong obtuse lobes; hy- 
panthium hirsute-strigose, in fruit about 8 mm. in diameter and erect; bractlets and sepals 
lanceolate, the former 3 mm. long, acute, the latter 4mm. long, acute or acuminate ; corolla 
about 1 cm. in diameter; petals obcordate, about a third longer than the sepals; stamens 
about 20; pistils many; styles filiform. 
TYPE LOCALITY: Castle Mountain [Alberta]. . 
DISTRIBUTION : High mountains from Alberta to Wyoming and Utah. 
ILLUSTRATION : Mem. Dep. Bot. Columbia Univ. 2: pl. 46, f. 1-5. 
155. Potentilla Richardii Lehm. Delect. Sem. Hort. 
Hamb. 1849: 6. 1849. 
Potentilla ancistifolia Galeotti; Lehm. Delect. Sem, Hort. Hamb. 1849: 6, asasynonym. 1849. 
Perennial, with a short caudex; stems short, ascending or erect, few-flowered, hirsute, 
with spreading hairs; basal leaves pinnate; leaflets about 7, hairy, with few spreading 
hairs, cuneate-flabelliform, incised or deeply 5-7-toothed at the end, with broadly oblong 
teeth ; stem-leaves similar but smaller and pinnately 5-foliolate or the upper ones 3-foliolate ; 
stipules broadly lanceolate, entire; bractlets oblong, shorter than the broadly ovate sepals ; 
petals yellow, obcordate, nearly twice as long as the sepals; stamens about 20; styles 
filiform. 
TYPE LOCALITY: Peak of Orizaba, Mexico. 
DISTRIBUTION: Mountains of central Mexico. 
ILLUSTRATION: Lehm. Rev. Potent. pi. 5, f. J. 
156. Potentilla cascadensis Rydb. Mem. Dep. Bot. Columbia 
Univ. 2: 109. 1898. 
Stem erect or ascending, from a perennial rootstock, simple, with 2 or 3 small leaves, 
slightly strigose or glabrate, strict ; stipules very large, broadly ovate, 10-15 mm. long, the 
lower ones brown and scarious and covering the ascending rootstock ; basal leaves pinnate; 
