UW Burke Herbarium species comparison

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Potentilla ovina

Potentilla argentea

hoary cinquefoil, silver cinquefoil
Habit Herbaceous perennial from a woody base, the numerous stems 1.5-3 dm. tall, covered with a gray pubescence.
Leaves

Leaves mainly cauline, 5-10 per stem, palmately divided, the leaflets 5, 1-2 cm. long, oblanceolate, with coarse serrate teeth over half way to the mid-vein;

stipules lanceolate, entire, 4-8 mm. long.
Flowers

Inflorescence open, branched, many-flowered, leafy-bracteate;

calyx 4-6 mm. broad, silky, the 5 lobes ovate-lanceolate, 2-3 mm. long, alternating with linear, shorter bracteoles;

petals 5, yellow, obovate with a wedge-shaped base, equaling the sepals;

stamens 20;

pistils numerous, the styles thickened and glandular at the base, tapered upward, attached to the end of the achene.
Fruits

Achene 0.6-0.8 mm. long, the same length as the style.

Potentilla ovina

Potentilla argentea
Flowering time June-July
Habitat Sandy or gravely soil, typically where disturbed.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Eurasia
Conservation status Not of concern
Sibling taxa
P. anserina, P. argentea, P. biennis, P. breweri, P. drummondii, P. flabellifolia, P. glaucophylla, P. gracilis, P. hyparctica, P. jepsonii, P. newberryi, P. nivea, P. norvegica, P. pensylvanica, P. recta, P. rivalis, P. supina, P. villosa
P. anserina, P. biennis, P. breweri, P. drummondii, P. flabellifolia, P. glaucophylla, P. gracilis, P. hyparctica, P. jepsonii, P. newberryi, P. nivea, P. norvegica, P. pensylvanica, P. recta, P. rivalis, P. supina, P. villosa
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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