Draba aureola
alpine whitlow-grass, great alpine whitlow-grass, Mt. Lassen draba whitlow-grass
Specimens
Photos

Distribution: Currently only known only from the Mt. Rainier area in Washington; Washington south to northern California

Habitat: Alpine areas, including scree and moraine areas.

Flowers: July-August

Origin: Native

Conservation Status: Not of concern

Description:
General :

Short-lived perennials, base simple or slightly branched; stems to 1.5 dm, branched or unbranched, pubescent, covered with simple trichomes with long stalks, 2-4-rayed and 0.2-1.5 mm.

Leaves:

Basal leaves form dense rosettes, sessile, blades linear or narrower toward base, up to 3 cm long and 2-5 mm broad, margins entire and ciliate; densely pubescent above and beneath, lower surface with 3-5-rayed, 0.1-0.5 mm stalked trichomes, upper surface with simple and longer-stalked 2-rayed trichomes to 1mm, and smaller 3-5-rayed trichomes; cauline leaves up to 33, sessile, oblong or linear, margins entire, densely pubescent above and beneath.

Flowers:

Inflorescence racemose, generally 12-83 flowered, ebracteate or occasionally bracteate proximally, may be slightly elongated in fruit, rachis somewhat rigid, pubescent; pedicels spreading horizontally, generally straight, infrequently upward-curving, 3-19 mm, pubescent; sepals 4, ovate, 2.5-4 mm, glabrous; petals 4, yellow, linear or narrower toward base, 4-6 mm long and 0.5-1 mm broad; anthers up to 1 mm, oblong and slender.

Accepted Name:
Draba aureola S. Watson
Publication: Bot. California. 2: 430. 1880. 1880.

Synonyms & Misapplications:
Draba aureola S. Watson var. paniculata L.F. Hend.
Additional Resources:

PNW Herbaria: Specimen records of Draba aureola in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Draba aureola checklist entry.

E-Flora BC: Draba aureola atlas page.

CalPhotos: Draba aureola photos.

USDA Plants: Draba aureola information.

9 photographs:
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