Blooms: June-September
Habit: herb
Duration: annual
Origin: Introduced from South America
Distribution: Occurring east of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Dry, disturbed areas.
Habit: herb
Duration: annual
Origin: Introduced from South America
Distribution: Occurring east of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Dry, disturbed areas.
Species Description:
General: Monoecious, glabrous to puberulent, basally branched annual, the several stems forming a rounded plant up to 10 dm. tall.
Leaves: Leaves alternate, the blades obovate to elliptic, 1-2.5 cm. long, narrowed to slender petioles ¼ to nearly as long.
Flowers: Flowers in small, axillary clusters, subtended by several narrowly lanceolate to needle-shaped bracts 1.5-3 mm. long; sepals 4-5, distinct, those of the pistillate flowers unequal, the longest equal to and like the bracts; those of the staminate flowers smaller, scale-like, acute but not spine-tipped; petals none; stamens 3 or 4; styles 3.
Fruits: 1-seeded capsule.
General: Monoecious, glabrous to puberulent, basally branched annual, the several stems forming a rounded plant up to 10 dm. tall.
Leaves: Leaves alternate, the blades obovate to elliptic, 1-2.5 cm. long, narrowed to slender petioles ¼ to nearly as long.
Flowers: Flowers in small, axillary clusters, subtended by several narrowly lanceolate to needle-shaped bracts 1.5-3 mm. long; sepals 4-5, distinct, those of the pistillate flowers unequal, the longest equal to and like the bracts; those of the staminate flowers smaller, scale-like, acute but not spine-tipped; petals none; stamens 3 or 4; styles 3.
Fruits: 1-seeded capsule.
Accepted Name:
Amaranthus albus L.Synonyms:
Amaranthus albus L. var. pubescens (Uline & W. L. Bray) Fernald
Amaranthus pubescens (Uline & W. L. Bray) Rydb.
Treated in Flora of the PNW as:
Amaranthus albus, Amaranthus graecizans (in part?)
Additional Resources:
PNW Herbaria Specimens: View list of Amaranthus albus specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of Amaranthus albus specimens in the WTU Herbarium database.
Washington Flora Checklist: Amaranthus albus treatment.
E-Flora BC: Amaranthus albus atlas page.
CalPhotos: Amaranthus albus images.
USDA Plants Database: Amaranthus albus.
Richard Old
Richard Old
Richard Old
G. D. Carr, 2009
G. D. Carr, 2009
G. D. Carr, 2009
G. D. Carr, 2009
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 WA Native Plant Society |
