Potentilla rubricaulis Lehm.

Potentilla virgulata A. Nelson, Bull. Torrey Club
27: 265. 1900.
Perennial, with a tap-root and short caudex ; stems 1 or 2, simple, erect, strict, 3-4 dm. high, slightly appressed-pubescent ; basal leaves pinnate, with 5-7 leaflets; petioles 6-10 cm. long, sparingly appressed-hairy ; leaflets obovate in outline, 1-2 cm. long, green and sparingly appressed-silky above, grayish or white beneath, dissected into narrowly linear divisions with revolute margins ; stem-leaves 5-foliolate, with more approximate leaflets, or the uppermost 3-foliolate ; stipules ovate-lanceolate, often acuminate ; cyme severalflowered, congested ; hypanthium grayish-pubescent, in fruit 4 mm, broad ; bractlets linear, equaling the lanceolate sepals, 2-3 mm. long; petals small, orbicular, about 4 mm. long, slightly emarginate ; stamens about 20 ; pistils numerous ; styles short, glandular at the
base.
Type locality : Wet, grassy flat, near Mammoth Hot Springs, Wyoming. Distribution : Wyoming and Utah to Alaska.

Potentilla rubricaulis Lehm. Stirp. Pug. 2 : 11. 1830
Perennial, with a short caudex ; stems several, ascending, about 2 dm. high, often tinged with red, pubescent with spreading hairs ; basal leaves pinnate with 5 approximate leaflets, rarely trifoliolate ; petioles 3-7 cm. long, pubescent with spreading, J^airs ; leaflets 1-3 cm. long, obovate or oblanceolate, glabrate above, white-tomentose beneath,
*
pinnately cleft into lanceolate acute teeth ; stem-leaves mostly ternate ; stipules ovatelanceolate, acute, entire ; cyme 5-9-flowered ; bractlets lance-oblong, acute ; sepals ovatelanceolate; petals obcordate, a little longer than the sepals ; stamens about 20 ; pistils many;
styles filiform.
Type locality: [Not given in the original publication, but supplied in Hooker's Flora.] Near Bear I,ake, Mackenzie.
Distribution : Arctic America from the Mackenzie to Kllesmere I^and.

Potentilla paucijuga Rydberg, sp. nov
Perennial, with a short caudex ; stems about 2 dm. high, tinged with purple, somewhat villous-hirsute, ascending or decumbent ; basal leaves pinnate, with 5 leaflets ; petioles villous-hirsute with spreading hairs, 4-5 cm. long ; terminal leaflet broadly obovate, 2-2.5 cm. long, sessile, green but densely hairy above, white-torn en tose and silky beneath, divided two thirds to the midrib into linear or oblong, acutish divisions ; lateral leaflets similar but smaller ; stem-leaves 1 or 2, trifoliolate, short-petioled ; stipules lanceolate, 1-1.5 cm. long; cyme 10-1 3 -flowered ; hypanthium y ellowishvillous ; bractlets linear, 2-3 mm. long, acute ; sepals lanceolate, acute, 5 mm. long ; petals yellow, broadly obovate, emarginate, about 6 mm. long ; stamens about 20 ; pistils many ; styles short, glandular and slightly thickened at the base.
Type collected on grassy slopes in the La Sal Mountains, Utah, at an altitude of 2700-3300 m., in 1899, C. A. Purpus251, in part (U. S. Nat. Herb. no. 505062, in part).

Potentilla saximontana Rydb. Bull. Torrey Club
23: 399. 1896.
Densely cespitose perennial ; stems several, 1-3-flowered, less than 1 dm. long, silkypubescent ; basal leaves numerous, pinnate with 5-7 often approximate leaflets, silkypubescent and somewhat tomentose beneath, short-petioled ; leaflets deeply dissected into oblong, obtuse or acute segments ; flowers 1-1.5 cm. in diameter ; hypanthium densely silky ; bractlets oblong, obtuse, shorter than the broadly ovate-triangular sepals, which are about 4 mm. long; petals broadly obcordate, 5-7 mm. long, much longer than the sepals;, stamens about 20 ; style nearly terminal, about equaling the smooth achene.
Type locality : Colorado.
Distribution : Mountains of Colorado.