Parr 4, 1908] ROSACHAE 315 
IX. Permolles. Stout, hoary perennials, with erect stems and much of the habit of the 
NUTTALLIANAE group, but the leaves densely pubescent on both sides and the stem densely 
retrorse-hirsute. 
45. Potentilla permollis Rydb. Bull. Torrey Club 28: 175. 1901. 
A stout hoary perennial; stems simple, about 6 dm. high, densely and softly pubescent 
with long whitish hairs; basal and lower stem-leaves usually 7-foliolate, digitate; petioles 
about 1 dm. long, densely pubescent with spreading or reflexed hairs; leaflets obovate to ob- 
lanceolate, obtuse, coarsely cleft nearly half way to the midrib, with lanceolate lobes, 
densely soft-pubescent on both sides, greenish above, whitish beneath; upper stem-leaves 
3-5-foliolate, similar, smaller, short-petioled; stipules of the stem-leaves large, adnate to 
the petiole, ovate, often over 3cm. long; cyme rather open; hypanthium and calyx densely 
white-pubescent; bractlets linear-lanceolate, about equaling the lanceolate sepals; petals 
yellow, 6-7 mm. long, obcordate, exceeding the sepals by about one fourth; stamens about 
20; pistils many ; styles filiform. 
TYPE LOCALITY: Endicott, Whitman County, Washington. 
DISTRIBUTION: State of Washington. . 
X. Candidae. Rather low perennials, more or less decumbent at the base. Leaves 
digitate, the basal ones 5-7-foliolate, those of the stem 3-5-foliolate and much smaller ; 
leaflets cleft more than halfway to the midrib into oblong or linear divisions. Petals 
obcordate. Stamens about 20. Pistils many; styles filiform. 
46. Potentilla candida Rydb. Bull. Torrey Club 24: 6. 1897. 
Potenitilla gracilis var. S. Wats. Bot. King’s Expl. 88. 1871. 
Perennial ; stem low, 1-2 dm. high, densely white silky-strigose ; stipules ovate, entire, 
nearly 1 cm. long; leaves on rather short petioles, densely silvery-silky on both sides, and 
white-tomentose beneath, digitate; leaflets 7-9, obovate in outline, 24 cm. long, rather 
thick, deeply incised or cleft into large oblong teeth; cyme rather dense; flowers about 1 
cm. in diameter; hypanthium white-silky; bractlets lanceolate, much shorter than the 
ovate sepals, which are about 5 mm. long; petals yellow, obcordate, a little exceeding the 
sepals; stamens 20; pistils many; styles filiform. 
TYPE LOCALITY : Diamond Valley, Nevada. 
DISTRIBUTION : Nevada and southern Utah. ; : 
ILLUSTRATIONS: Bull. Torrey Club 24: £2. 287; Mem. Dep. Bot. Columbia Univ. 2: £1. 23. 
47. Potentilla Elmeri Rydberg, sp. nov. 
Perennial, with a short, cespitose candex ; stem ascending or decumbent at the base, 2-4 
dm. high, appressed-silky ; basal leaves and rarely the lower cauline ones digitately 7-folio- 
late; petioles 3-10 cm. long, appressed-silky ; leaflets 2-3 cm. long, oblanceolate, deeply 
dissected into oblong divisions, sparingly appressed-silky above, densely so beneath ; 
middie and upper stem-leaves reduced, 3-5-foliolate ; inflorescence open ; hypanthium silky- 
hirsute, in fruit 7mm. broad; bractlets linear-lanceolate, 3 mm. long ; sepals ovate-lanceo- 
Jate, short-acuminate, 5-6 mm. long; petals obcordate, about 6 mm. long; stamens 20; 
pistils many ; styles filiform. 
Type collected in Ventura County, California, in 1902, A. D. HE. Elmer 4009 (herb. N. Y. 
Bot. Gard.). 
DISTRIBUTION : Type locality and near Donner Lake. 
48. Potentilla Pecten Rydberg, sp. nov. 
Perennial, with a stout tap-root and a short cespitose caudex; stem 2-3 dm. high, 
ascending or decumbent at the base, grayish silky-strigose ; basal leaves digitately 7-folio- 
late; petioles silky-strigose, 3-6 cm. long; larger leaflets 3-4 cm. long, elliptic-ovate or 
oblanceolate, green and appressed-hairy above, more or less tomentose and silky (on the 
veins) beneath, dissected ¥%-% to the midrib into oblong acute divisions; stem-leaves few, 
small, 3-5-foliolate; inflorescence 10-15-flowered; hypanthium silky-strigose ; bractlets 2-3 
