Page authors: Don Knoke, David Giblin
Delphinium xantholeucum
yellow-white larkspur

Distribution: Endemic to Okanogan, Chelan, and Douglas counties in Washington.

Habitat: Dry, grassy hillsides and ponderosa pine forests.

Flowers: April-June

Origin: Native

Conservation Status: Not of concern


Rather stout perennial from a thick, branching, fibrous root, the single stem 3-8 dm. tall, glabrous below but glandular at least in the inflorescence.


Leaves few, glabrous and glaucous, mostly on the lower 1/5 of the stem; leaf blades 2-7 cm. broad, 3-4 times dissected, the ultimate segments linear, 1-2 mm. broad.


Inflorescence compound, the main raceme as long as the rest of the stem, loosely many-flowered; pedicels elongate, spreading; sepals 5, creamy-white to greenish-white, green-tipped, the lateral pair oblong, about 10 mm. long; spur 12-15 mm. long; petals 4, small, creamy-yellow; stamens numerous; pistils 3.


Follicles 15-22 mm. long, erect, glabrous to glandular-pubescent.

Accepted Name:
Delphinium xantholeucum Piper
Publication: Contr. U.S. Natl. Herb. 11: 280. 1906. 1906.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Delphinium xantholeucum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Delphinium xantholeucum checklist entry.

E-Flora BC: Delphinium xantholeucum atlas page.

CalPhotos: Delphinium xantholeucum photos.

USDA Plants: Delphinium xantholeucum information.

18 photographs:
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