ROSACEAE. [Vor II. 
4. Potentilla intermedia L. Downy 
Cinquefoil. (Fig. 1916.) 
Potentilla intermedia 1,. Mant. 1: 76. 1767. 
Perennial, stem 1°-214° high, usually ascend- 
ing, leafy and much branched, finely pubescent 
with long hairs. Leaves green and finely hirsute 
on both sides, somewhat tomentose beneath, all 
but the uppermost 5-foliolate, the lower long-pe- 
tioled; stipules narrow, acute, mostly entire; leaf- 
lets obovate or oblong, the teeth rather obtuse; 
flowers numerous, cymose, yellow, leafy-bracted; 
petals obcordate, equalling the triangular-ovate 
acute sepals and oblong bractlets; stamens about 
20; style terminal,short,not thickened at the base. 
Massachusetts, New York and New Jersey. Ad- 
ventive from Europe. Resembles P. Monspeliensis, 
differing in its 5-foliolate leaves, and perennial root. 
5. Potentilla récta L. Rough-fruited 
Cinquefoil. (Fig. 1917.) 
Potentilla recta 1. Sp. Pl. 497. 1753. 
Potentilla pilosa Willd. Sp. Pl. 2: 1109. 1799. 
Erect, rather stout, branched above, villous-pu- 
bescent, 1°-2° high. Stipules ovate-lanceolate, the 
lower foliaceous and laciniate; leaves digitately 
5-7-foliolate, all but the uppermost petioled; leaf- 
lets oblanceolate or oblong-lanceolate, obtuse at 
the apex, narrowed or cuneate at the base, green 
both sides, sparingly pubescent with scattered 
hairs above, more pubescent beneath, incised-den- 
tate, 1/-3’ long, with divergent teeth; flowers ter- 
minal, cymose, yellow, numerous, 6’/-9/’ broad; 
stamens about 20; style slender, terminal; carpels 
rugose, 
In waste places, Ontario, New York, Virginia and 
Michigan. Adventive from Europe. Native also of 
Asia. June—Sept. 
6. Potentilla nivea L. Snowy Cinquefoil. (Fig. 1918.) 
Potentilla nivea I. Sp. Pl. 499. 1753. 
Stems 2/-6’ high, woody at the base, ascending or 
erect, silky-villous, the flowering ones mostly simple, 
Stipules membranous, silky; leaves 3-foliolate (very 
rarely 5-foliolate), the lower petioled; leaflets obo- 
vate, oblong or oval, obtuse, incised-dentate or cre- 
nate, densely white-pubescent beneath, green and 
loosely villous above, 4’’-8’ long, the terminal one 
generally cuneate, the others narrowed or rounded 
at the base; flowers 1-5, terminal, pedicelled, yellow, 
5/’-9’’ broad; sepals silky, lanceolate, acute, shorter 
than the broadly obovate emarginate petals, longer 
than the bractlets; stamens about 20; style filiform, 
terminal; achenes glabrous. 
Labrador, Greenland and throughout arctic America 
to British Columbia, south in the Rocky Mountains to 
Utah and Colorado. Also in arctic and alpine Europe 
and Asia. Summer. 
