Macoun's Cinquefoil

Potentilla macounii Rydb. Mem. Dep. Bot. Columbia
Univ. 2 : 101. 1898.
Cespitose perennial; stems usually more than one from the caudex, ascending, silky-villous, less than 1 dm. high, 1or 2-leaved ; stipules ovate, 5-10 mm. long ; basal leaves, many, pinnate with 3-5 pairs of rather approximate leaflets, silky on both sides and somewhat tomentose beneath ; leaflets cuneate, about 1 cm. long, deeply cleft into oblong segments ; stem-leaves much reduced ; cyme few-flowered ; hypanthium silky-villous, in fruit 7-8 mm. in diameter; bractlets lanceolate, often nearly as long as the ovate sepals, which. are 4-5 mm. long ; petals obcordate, 5-7 mm. long; stamens about 20 ; style filiform.
Type locality : Crow's Nest Pass, Alberta. Distribution : Rocky slopes, Alberta and Montana