Page author: Don Knoke
Iva axillaris
deeproot, deer root, poverty weed
WTU images
WTU specimens
Other herbaria

Distribution: Chiefly east of the Castades, southern British Columbia to California, east to Manitoba and Oklahoma.

Habitat: Dry, often alkaline places, in the valleys, plains and foothills.

Flowers: May - September

Origin: Native

Conservation Status: Not of concern

Description:
General:

Perennial from creeping rhizomes, 1.5-6 dm. tall, aromatic.

Leaves:

Leaves nearly sessile, oblong or obovate to broadly linear, entire, 1-5 cm. long

Flowers:

Heads numerous, on short axillary peduncles, nodding; involucre 2-4 mm. high, it 4-6 bracts attached to each other at the base; corollas all tubular, the pistillate few, greenish, 1 mm. long; staminate flowers greenish, with undivided style, the filaments attached to each other; receptacle small, chaffy throughout; pappus none.

Fruits:

Achenes compressed parallel to the involucral bracts.

Accepted Name:
Iva axillaris Pursh
Publication: Fl. Amer. Sept. 2: 743. 1813. 1813.

Synonyms & Misapplications:
Iva axillaris Pursh ssp. robustior (Hook.) Bassett
Additional Resources:

PNW Herbaria: Specimen records of Iva axillaris in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Iva axillaris checklist entry.

E-Flora BC: Iva axillaris atlas page.

CalPhotos: Iva axillaris photos.

USDA Plants: Iva axillaris information.

22 photographs:
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