Burke: Packera streptanthifolia vs. Packera pseudaurea

	Packera streptanthifolia	Packera pseudaurea
	Rocky Mountain butterweed, cleftleaf groundsel, Rocky Mountain groundsel	streambank butterweed
Habit	Glabrous, fibrous-rooted perennial from a short, woody base or rhizome, 1-5 dm. high.	Fibrous-rooted perennial from a short rhizome, essentially glabrous by flowering time, 3-7 dm. tall.
Leaves	Somewhat succulent, the basal ones with long petioles and mostly elliptic or sub-rotund blade, with course, rounded teeth or entire; cauline leaves few and reduced, becoming sessile on the upper stem but not clasping, about twice as long as wide, usually somewhat coarsely lobed toward their bases.	Leaves thin, the basal ones long-petiolate, the blades sharply toothed, ovate, cordate to truncate at the base, the cauline ones few, progressively reduced upward, becoming sessile, pinnatifid or incised toward their bases.
Flowers	Heads several, involucres 5-7 mm. high; rays 6-12 mm. long, yellow.	Heads several to many, the disk 8-13 mm. wide; involucre 5-8 mm. high; rays 6-10 mm. long, yellow.

	Packera streptanthifolia	Packera pseudaurea
Identification notes		The sub-cordate basal leaves that are sharply toothed but not otherwise divided is characteristic of this species.
Flowering time	May-August	June-August
Habitat	Moist to moderately dry open areas and forest, from middle elevations to the subalpine.	Wet meadows, stream banks and moist woodlands from middle elevations to the sublpine.
Distribution	Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the Rocky Mountains and Sasketchewan. [WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; British Columbia to California, the Rocky Mountains, northern Great Plains, and central U.S. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	P. bolanderi, P. cana, P. contermina, P. flettii, P. indecora, P. macounii, P. pauciflora, P. paupercula, P. porteri, P. pseudaurea, P. subnuda	P. bolanderi, P. cana, P. contermina, P. flettii, P. indecora, P. macounii, P. pauciflora, P. paupercula, P. porteri, P. streptanthifolia, P. subnuda
Subordinate taxa		P. pseudaurea var. pseudaurea
Web links	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria, Turner Photog. 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

Packera pseudaurea

Rocky Mountain butterweed, cleftleaf groundsel, Rocky Mountain groundsel

streambank butterweed

Habit

Glabrous, fibrous-rooted perennial from a short, woody base or rhizome, 1-5 dm. high.

Fibrous-rooted perennial from a short rhizome, essentially glabrous by flowering time, 3-7 dm. tall.

Leaves

Somewhat succulent, the basal ones with long petioles and mostly elliptic or sub-rotund blade, with course, rounded teeth or entire;

cauline leaves few and reduced, becoming sessile on the upper stem but not clasping, about twice as long as wide, usually somewhat coarsely lobed toward their bases.

Leaves thin, the basal ones long-petiolate, the blades sharply toothed, ovate, cordate to truncate at the base, the cauline ones few, progressively reduced upward, becoming sessile, pinnatifid or incised toward their bases.

Flowers

Heads several, involucres 5-7 mm. high;

rays 6-12 mm. long, yellow.

Heads several to many, the disk 8-13 mm. wide;

involucre 5-8 mm. high;

rays 6-10 mm. long, yellow.

Packera streptanthifolia

Packera pseudaurea

Identification notes

The sub-cordate basal leaves that are sharply toothed but not otherwise divided is characteristic of this species.

Flowering time

May-August

June-August

Habitat

Moist to moderately dry open areas and forest, from middle elevations to the subalpine.

Wet meadows, stream banks and moist woodlands from middle elevations to the sublpine.

Distribution

Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the Rocky Mountains and Sasketchewan.

[WildflowerSearch map]

[BONAP county map]

Occurring on both sides of the Cascades crest in Washington; British Columbia to California, the Rocky Mountains, northern Great Plains, and central U.S.

[WildflowerSearch map]

[BONAP county map]

Origin

Native

Conservation status

Not of concern

Sibling taxa