318 NORTH AMERICAN FLORA [VoLuME 22 
56. Potentilla intermittens Rydberg, sp. nov. 
Perennial, with a short cespitose caudex; stems ascending, about 3 dm. high, sparingly 
hairy ; basal leaves 5-7-foliolate; petioles 5-10 cm. long, sparingly silky-strigose ; leaflets 
cuneate-oblanceolate, most of them sharply cut-toothed with lanceolate teeth directed for- 
ward, usually entire at the cuneate base, sparingly silky above, grayish tomentose beneath 
and with appressed-silky veins; stem-leaves 3~5-foliolate, short-petioled ; stipules lanceo- 
late, entire, about 1 cm. long; inflorescence few-flowered ; hypanthium silky-villose, in 
fruit 6-7 mm. broad ; bractlets linear, 4mm. long; sepals lanceolate, acuminate, 5-6 mm. 
long ; petals obcordate, 6-7 mm. long; stamens about 20; pistils many; styles filiform. 
(Perhaps a hybrid between P. glaucophylla and P. filipes.) 
Type collected in Cameron Pass, Colorado, in 1896, C. F. Baker 25 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Mountains from Alberta to Colorado and Nevada. 
57. Potentilla viridescens Rydb. Mem. Dep. Bot. Columbia 
Univ. 2: 69. 1898. 
Perennial, with a cespitose caudex; stem 5-7 dm. high, sparingly silky with appressed 
or slightly spreading hairs, branched above; basal leaves several, with petioles 1-2 dm. 
long, digitate, with about 7 leaflets, silky but green above, silky and somewhat tomentulose 
but scarcely white beneath; leaflets oblanceolate or spatulate, deeply toothed or divided 
nearly halfway to the midrib, with lanceolate often somewhat divergent teeth ; stem-leaves 
smaller, with short petioles; cyme many-flowered, loose and open; hypanthium silky, in 
fruit about 8 mm. in diameter; bractlets lanceolate, a little shorter than the ovate-lanceo- 
late sepals, both acuminate and about 5 mm. long; corolla 10-15 mm. in diameter, yellow; 
petals obcordate, equaling or slightly exceeding the sepals; stamens about 20; pistils 
many; styles filiform. 
TYPE LOCALITY: [In the original description no type was designated, but the following is so 
designated in the herbarium of the N. Y. Bot. Garden :] Braggs Creek, Alberta, Macoun 16746. 
DISTRIBUTION: Valleys, Manitoba to Alberta and Wyoming, 
58. Potentilla alaskana Rydberg, sp. nov. 
Perennial, with a thick cespitose rootstock; stem 2-5 dm. high, silky with appressed 
hairs; petioles of the basal leaves 1-1.5 dm. long; leaves digitately 7-foliolate; leaflets 
obovate, the middle one 2.5-6 cm. long, coarsely toothed 4%-¥% to the midrib with lanceo- 
late or ovate-lanceolate teeth, dark-green and glabrate above, white-tomentose beneath ; 
stem-leaves few, 3-5-foliolate, rather small; stipules large, ovate-lanceolate, the upper often 
2 cm. long, entire or slightly toothed; inflorescence open and corymbiform, flat-topped ; 
hypanthium silky with long spreading hairs; bractlets narrowly linear, 4-5 mm. long; 
sepals about 8 mm. long, ovate, acuminate; petals broadly obcordate, 9-14 mm. long and 
fully as broad; stamens 20-25; pistils many; styles filiform. 
gee collected on Kadiak Island, Alaska, in 1900, # A. Walpole 1201 (U.S. Nat. Herb. no. 
). 
DISTRIBUTION: Island of Kadiak. 
59. Potentilla glomerata A. Nelson, Bull. Torrey Club 
26: 480. 1899. 
Potentilia Blaschkeana Rydb. Mem. Dep. Bot. Columbia Univ.2: 69,in part. 1898. Not. P. 
Blaschkeana Turcz. 1853. 
Perennial, with a thick woody root and a short caudex; stem stout, 4-8 dm. high, softly 
pubescent with appressed or slightly spreading hairs; basal leaves digitately 7-foliolate ; 
petioles 1-2 dm. long, more or less pubescent with appressed or somewhat spreading hairs; 
leaflets 4-8 cm. long, oblanceolate or narrowly obovate, cut-toothed with oblong, lanceolate, 
or triangular teeth, green but densely appressed-hairy above with short hairs, more or less 
tomentose beneath and silky on the veins; stem-leaves similar but with shorter petioles; 
inflorescence at first dense, congested, but later more open; hypanthium silky, in fruit 
about 8 mm. broad; bractlets oblong or lanceolate, shorter than the broadly lanceolate 
