Burke: Potentilla subviscosa vs. Potentilla drummondii

	Potentilla subviscosa	Potentilla drummondii
		Drummond's cinquefoil
Habit		Eglandular perennial from a branched base and short, thick rhizomes, the flowering stems 2.5-4.5 dm. tall.
Leaves		Basal leaves pinnate, the leaflets 5-9, closely crowded, obovate, 2-5 cm. long, the upper 3 somewhat confluent, all cleft about midway to the mid-vein into linear or lanceolate teeth; stipules 1-2 cm. long, ovate, entire; cauline leaves few, much reduced.
Flowers		Inflorescence open, many-flowered; calyx saucer-shaped, up to 1.5 cm. wide in fruit, the 5 ovate lobes slightly longer than the alternating lanceolate bracteoles; petals 5, yellow, obovate, 6-11 mm. long; stamens 20; pistils numerous, style slender, sub-terminal, longer than the achene.
Fruits		Achene 1.5 mm. long.

	Potentilla subviscosa	Potentilla drummondii
Flowering time		June-August
Habitat		Forest openings, meadows and high ridges, middle to high elevations in the mountains.
Distribution	[WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Idaho, and Montana. [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. 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	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	Local floras: BC, 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

Potentilla subviscosa

Potentilla drummondii

Drummond's cinquefoil

Habit

Eglandular perennial from a branched base and short, thick rhizomes, the flowering stems 2.5-4.5 dm. tall.

Leaves

Basal leaves pinnate, the leaflets 5-9, closely crowded, obovate, 2-5 cm. long, the upper 3 somewhat confluent, all cleft about midway to the mid-vein into linear or lanceolate teeth;

stipules 1-2 cm. long, ovate, entire;

cauline leaves few, much reduced.

Flowers

Inflorescence open, many-flowered;

calyx saucer-shaped, up to 1.5 cm. wide in fruit, the 5 ovate lobes slightly longer than the alternating lanceolate bracteoles;

petals 5, yellow, obovate, 6-11 mm. long;

stamens 20;

pistils numerous, style slender, sub-terminal, longer than the achene.

Fruits

Achene 1.5 mm. long.