Burke: Potentilla newberryi vs. Potentilla villosa

	Potentilla newberryi	Potentilla villosa
	Newberry's cinquefoil	northern cinquefoil, villous cinquefoil
Habit		Tufted perennial from a branched crown and short, thick rhizomes, the stems 5-20 cm. tall, with soft, gray hairs throughout.
Leaves		Leaves ternate, the leaflets somewhat leathery, woolly below, strongly veined, obovate, 1-2 cm. long, coarsely dentate, the teeth rounded; cauline leaves 2, sub-sessile, only slightly reduced.
Flowers		Inflorescence open, 2-5 flowered; calyx 7-11 mm. long, the 5 lobes triangular, 3.5-4.5 mm. long, equal to the alternating, oval-elliptic bracteoles; petals 5, yellow, obcordate, exceeding the sepals; stamens 20; pistils numerous, style sub-terminal, basally thickened and tapered, equal to the achene;
Fruits		Achene 1 mm. long, smooth.

	Potentilla newberryi	Potentilla villosa
Flowering time	April-May	July-September
Habitat	Vernal pools, shores, and mudflats.	Arctic tundra to alpine ridges, talus slopes and rock crevices.
Distribution	Known historically (1898) from the Columbia River Gorge in Washington, now likely extirpated; central Oregon to California, east to northwestern Nevada. [WildflowerSearch map] [BONAP county map]	Occurring in the North Cascades, Olympic Mountains, and at Mt. Rainier in Washington; Alaska to Oregon. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Historical in Washington (WANHP)	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. nivea, P. norvegica, P. pensylvanica, P. recta, P. rivalis, P. supina, P. villosa	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
Web links	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Potentilla newberryi

Potentilla villosa

Newberry's cinquefoil

northern cinquefoil, villous cinquefoil

Habit

Tufted perennial from a branched crown and short, thick rhizomes, the stems 5-20 cm. tall, with soft, gray hairs throughout.

Leaves

Leaves ternate, the leaflets somewhat leathery, woolly below, strongly veined, obovate, 1-2 cm. long, coarsely dentate, the teeth rounded;

cauline leaves 2, sub-sessile, only slightly reduced.

Flowers

Inflorescence open, 2-5 flowered;

calyx 7-11 mm. long, the 5 lobes triangular, 3.5-4.5 mm. long, equal to the alternating, oval-elliptic bracteoles;

petals 5, yellow, obcordate, exceeding the sepals;

stamens 20;

pistils numerous, style sub-terminal, basally thickened and tapered, equal to the achene;

Fruits

Achene 1 mm. long, smooth.

Potentilla newberryi

Potentilla villosa

Flowering time

April-May

July-September

Habitat

Vernal pools, shores, and mudflats.

Arctic tundra to alpine ridges, talus slopes and rock crevices.

Distribution

Known historically (1898) from the Columbia River Gorge in Washington, now likely extirpated; central Oregon to California, east to northwestern Nevada.

[WildflowerSearch map]

[BONAP county map]