E-Flora BC: Electronic Atlas of the Flora of British Columbia

Amaranthus blitoides S. Watson
prostrate pigweed (mat amaranth; prostrate tumbleweed)
Amaranthaceae (Amaranth family)

Introduction to Vascular Plants

Distribution of Amaranthus blitoides
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Species Information

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Illustration Source: The Illustrated Flora of British Columbia

General:
Annual herb from a taproot; stems prostrate or decumbent, several, glabrous to short-hairy, 30-70 cm tall.

Leaves:
Alternate or opposite, the blades rarely over 3 cm long, diamond-shaped to egg-shaped, callous-margined, bristle-tipped narrowing to a slender stalk.

Flowers:
Inflorescence in small axillary clusters; bracts narrowly lanceolate, bristle-tipped; tepals 4-5; stamens 3-4.

Fruits:
Capsules opening along an "equator", the top coming off like a lid, 1-seeded; seeds 1.3-1.7 mm long, lens-shaped.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry disturbed areas in the lowland, steppe and montane zones; infrequent in S BC; throughout N. America, W. Indies, Europe.

Source: The Illustrated Flora of British Columbia

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Status Information

Origin Status	Provincial Status	BC List (Red Blue List)	COSEWIC
Exotic	SNA	Exotic	Not Listed

BC Ministry of Environment: BC Species and Ecosystems Explorer, the authoritative source for conservation information in British Columbia.

Synonyms and Alternate Names

Amaranthus graecizans L.

Taxonomic and Nomenclatural Links

Flora North America treatment for Amaranthaceae
Flora North America treatment for Amaranthus blitoides
Genetic information (NCBI Taxonomy Database)
International Plant Names Index
Taxonomic Information from the World Flora Online
Integrated Taxonomic Information System

Additional Range and Status Information Links

Burke Museum of Natural History (Washington State records)
CalFlora
Consortium of Pacific Northwest Herbaria records
Jepson Interchange
NatureServe Explorer
USDA

Additional Photo Sources

UBC Herbarium Scanned Collection Record
Images From CalPhoto
UT Austin's Native Plant Database
Google Image Search
Flickr Image Search

General References

Google Scholar Search
Family References
General Botanical References for BC

Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2024-05-08 12:01:02 PM ]

Disclaimer: The information contained in the E-Flora atlas pages is derived from expert sources as cited in each section. This information is scientifically based. E-Flora also acts as a portal to other sites via deep links. As always, users should refer to the original sources for complete information. E-Flora BC is not responsible for the accuracy or completeness of the original information.