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

Iva axillaris Pursh (Hook.) Bassett
poverty-weed (povertyweed)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #3451)

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Distribution of Iva axillaris
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Species Information

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General:
Perennial herb from a creeping rhizome; stems erect, branched, sparsely hairy or nearly glabrous, 15-60 cm tall.
Leaves:
Basal leaves lacking, lower leaves opposite, upper leaves alternate, unstalked or more or less stalked, oblong to broadly linear, 1-5 cm long, entire.
Flowers:
Heads disciform on short, axillary stalks, nodding, greenish-white; involucres 2-4 mm tall; involucral bracts 4-6, fused at the base; female corollas tubular, 1 mm long.
Fruits:
Achenes with unstalked glands, compressed, 2-3 mm long; pappus lacking.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry disturbed areas in the steppe zone; rare in SC BC; E to MB and S to OK and CA.

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.

Synonyms and Alternate Names

Iva axillaris subsp. robustior (Hook.) Bassett
Iva axillaris var. robustior Hook.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References