UW Burke Herbarium species comparison

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Potentilla millefolia

Potentilla flabellifolia

fan-leaf cinquefoil, fringe-leaf cinquefoil, fan-foil
Habit Perennial from a branched base and well-developed rhizomes, moderately puberulent but green throughout, the stems 1.5-2.5 dm. tall.
Leaves

Basal leaves numerous, long-petiolate, the blades ternate, the leaflets obovate, deeply toothed, the teeth rounded;

stipules membranous, ovate, 5-15 mm. long;

cauline leaves 1-2, reduced.
Flowers

Inflorescence open, few-flowered, leafy-bracteate;

calyx saucer-shaped, 1-1.5 cm. broad, the 5 lobes deltoid-lanceolate, the alternating bracteoles slightly shorter, elliptic, toothed;

petals 5, bright yellow, obcordate, up to 10 mm. long;

stamens 20, inserted just outside a blackish-purple disk;

pistils numerous;

style slender, sub-terminal, longer than the achene.
Fruits

Achene 1.5 mm. long, smooth.

Potentilla millefolia

Potentilla flabellifolia
Flowering time June-August
Habitat Common in moist meadows from middle to high elevations in the mountains.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada, east to Alberta, Montana and Wyoming.
[WildflowerSearch map]
[BONAP county map]
Origin Native
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. argentea, P. biennis, P. breweri, P. drummondii, 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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