Zizia aptera
heart-leaved Alexanders
WTU specimens
Other herbaria

Distribution: Eastern Washington and northwest Oregon, east to central and eastern United States.

Habitat: Moist or wet meadows, stream banks, and moist low ground; tolerant of alkali.

Flowers: May - July

Origin: Native

Conservation Status: Not of concern


Glabrous perennial from a short, woody base and fleshy-fibrous roots, the stems clustered, 2-6 dm. tall.


Basal leaves long-petiolate with broad, cordate, serrate blades 2.5-10 cm. long and 1.5-8 cm. wide, or occasionally some of them trifoliate with elliptic leaflets; cauline leave few, trifoliate, short-petiolate, with coarser and sharper teeth than the lower leaves.


Inflorescence of compound umbels, compact and densely flowered, 1.5-4 cm. wide, the rays up to 3.5 cm. long at maturity; flowers bright yellow; calyx teeth 5, well-developed; involucre none, involucels inconspicuous.


Fruit oblong, 2-4 mm. long, glabrous, with prominent, slightly raised ribs.

Accepted Name:
Zizia aptera (A. Gray) Fernald

Synonyms & Misapplications:
(none provided)
var. occidentalis – heart-leaved Alexanders
Additional Resources:

PNW Herbaria: Specimen records of Zizia aptera in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Zizia aptera checklist entry.

E-Flora BC: Zizia aptera atlas page.

CalPhotos: Zizia aptera photos.

USDA Plants: Zizia aptera information.

17 photographs:
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