Burke: Chenopodium album vs. Chenopodium fremontii

	Chenopodium album	Chenopodium fremontii
	lambsquarters, pigweed	Fremont's goosefoot
Habit	Erect or rounded, freely-branched annual, 2-10 dm. tall, greenish to grayish with a mealy coating, often tinged with red in age.
Leaves	Leaves alternate, usually firm and somewhat succulent, the blade ovate to rhombic with a wedge-shaped base, 3-10 cm. long, mostly shallowly to deeply wavy-toothed, with a slender, short petiole.
Flowers	Flowers perfect, glomerate in large, terminal panicles; perianth 5-cleft to below the middle, with a mealy coating, becoming strongly keeled and completely covering the fruit; stamens 5, opposite the perianth lobes; styles 2, short.
Fruits	Utricle.

	Chenopodium album	Chenopodium fremontii
Flowering time	June-September	June-September
Habitat	Fields, roadsides, forest edge, wastelots, and other disturbed areas.	Sagebrush desert to low montane forest.
Distribution	Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]	Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Great Plains. [WildflowerSearch map] [BONAP county map]
Origin	Introduced from Europe, but some populations in the Midwest may be native to North America, according to FNA	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	C. atrovirens, C. berlandieri, C. fremontii, C. incognitum, C. leptophyllum, C. opulifolium, C. pratericola, C. ×schulzeanum, C. strictum, C. subglabrum	C. album, C. atrovirens, C. berlandieri, C. incognitum, C. leptophyllum, C. opulifolium, C. pratericola, C. ×schulzeanum, C. strictum, C. subglabrum
Web links	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	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

Chenopodium album

Chenopodium fremontii

lambsquarters, pigweed

Fremont's goosefoot

Habit

Erect or rounded, freely-branched annual, 2-10 dm. tall, greenish to grayish with a mealy coating, often tinged with red in age.

Leaves

Leaves alternate, usually firm and somewhat succulent, the blade ovate to rhombic with a wedge-shaped base, 3-10 cm. long, mostly shallowly to deeply wavy-toothed, with a slender, short petiole.

Flowers

Flowers perfect, glomerate in large, terminal panicles;

perianth 5-cleft to below the middle, with a mealy coating, becoming strongly keeled and completely covering the fruit;

stamens 5, opposite the perianth lobes;

styles 2, short.

Fruits

Utricle.