Burke: Packera hesperia vs. Packera contermina

	Packera hesperia	Packera contermina
		dwarf arctic butterweed
Leaves		Leaves somewhat thick, the basal ones ovate to kidney-shaped, sub-entire or with blunt teeth, the blade up to 2.5 cm. long and wide, abruptly contracted to the petiole; cauline leaves reduced upwards, becoming sessile, occasionally pinnatifid.
Inflorescence		Heads solitary, or rarely 2, the disk 11-18 mm. wide, usually orange; involucre 7-8 mm. high, the bracts purplish; rays various, sometimes up to 14 mm. long and 4 mm. wide; pappus of numerous, white, capillary bristles.
Fruits		Achene sub-terete.

	Packera hesperia	Packera contermina
Flowering time		July-September
Habitat		Exposed, rocky places in the alpine to occasionally the subalpine;
Distribution	[WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; British Columbia to Washington, east to Alberta and Montana. [WildflowerSearch map] [BONAP county map]
Origin		Native
Conservation status		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. streptanthifolia, P. subnuda	P. bolanderi, P. cana, P. flettii, P. indecora, P. macounii, P. pauciflora, P. paupercula, P. porteri, P. pseudaurea, P. streptanthifolia, P. subnuda
Web links	Local floras: CA, OR 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, 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 hesperia

Packera contermina

dwarf arctic butterweed

Leaves

Leaves somewhat thick, the basal ones ovate to kidney-shaped, sub-entire or with blunt teeth, the blade up to 2.5 cm. long and wide, abruptly contracted to the petiole;

cauline leaves reduced upwards, becoming sessile, occasionally pinnatifid.

Inflorescence

Heads solitary, or rarely 2, the disk 11-18 mm. wide, usually orange;

involucre 7-8 mm. high, the bracts purplish;

rays various, sometimes up to 14 mm. long and 4 mm. wide; pappus of numerous, white, capillary bristles.

Fruits

Achene sub-terete.