Species: Potentilla uniflora
Encyclopedia of Puget Sound
One-flowered Cinquefoil is an herbaceous perennial with erect or ascending stems that are 5-15 cm high and arising from a branched rootcrown. The basal leaves have slender petioles and 3 deeply toothed, elliptic leaflets that are 1-2 cm long. The 1-2 alternate stem leaves are similar but much smaller. The lower leaf surfaces and upper stems are densely covered with long, tangled, gray hairs, while the upper surfaces, petioles, and lower stems are sparsely covered with stiff, straight hairs. 1-2 stalked flowers are borne at the top of the stem. The saucer-shaped flowers have 5 lance-shaped, long-hairy sepals that are 3-4 mm long, 5 yellow, oblong petals that are 4-5 mm long with shallowly lobed tips, 20 stamens, and numerous pistils. The slender style is attached near the top of the achene, which is finely bumpy near its base.
Classification
Dicotyledoneae
Rosales
Rosaceae
Potentilla
NatureServe
Classification
Ecology and Life History
One-flowered Cinquefoil is an herbaceous perennial with erect or ascending stems that are 5-15 cm high and arising from a branched rootcrown. The basal leaves have slender petioles and 3 deeply toothed, elliptic leaflets that are 1-2 cm long. The 1-2 alternate stem leaves are similar but much smaller. The lower leaf surfaces and upper stems are densely covered with long, tangled, gray hairs, while the upper surfaces, petioles, and lower stems are sparsely covered with stiff, straight hairs. 1-2 stalked flowers are borne at the top of the stem. The saucer-shaped flowers have 5 lance-shaped, long-hairy sepals that are 3-4 mm long, 5 yellow, oblong petals that are 4-5 mm long with shallowly lobed tips, 20 stamens, and numerous pistils. The slender style is attached near the top of the achene, which is finely bumpy near its base.