Sulphur Cinquefoil
Potentilla recta
Family: Rosaceae, Rose
Genus: Potentilla

General: perennial with an erect, simple to branched base
but without rootstocks, sparsely to rather copiously stiff-
hairy and with more abundant, finer, shorter, sometimes
glandular hairs, greenish throughout. Stems one to few,
erect, branched above, very leafy, about 30-80 cm tall.
Leaves: alternate, palmately divided. Leaflets 5-7,
oblanceolate, strongly veined, 3-8 cm long, sharply toothed
about halfway to the midvein. Stipules lanceolate to ovate,
1-2 cm long, the upper ones cut into 2 or more strips.
Flowers: many in flat-topped clusters, with leafy bracts
at the lower nodes, the branches ascending. Petals 5, pale
yellow, obovate, notched, equal to or up to 3 mm longer
than the sepals. Calyx up to 12 mm broad, the lobes
strongly veined, more or less sharp-pointed, 5-9 mm long,
enlarging after flowering. Stamens usually 25. Pistils many,
style somewhat thickened and glandular-warty near the
base, attached near the top.
Flowering time: June-July.
Fruits: achenes strongly net-veined, slightly keeled on
the outer edge, brownish-purple, 1 mm long.

Disturbed areas, sometimes as a weed, in w. parts of MT.
Introduced from Eurasia, now spread mostly in e. U.S.

Edible and Medicinal plant: see below.
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Edible Uses:
The fruit of sulphur cinquefoil is edible, raw or cooked. The unripe fruit is reportedly almost as pleasant as the fully ripe fruit.

Medicinal Uses:
The whole plant has agents that cause tissue to contract. The Okanagan-Colville Indians used a poultice of the pounded leaves and stems applied to open sores and wounds.

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