Page authors: Don Knoke, David Giblin
Boechera lemmonii
Lemmon's rockcress

Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.

Habitat: Alpine meadows, ridges and talus slopes.

Flowers: July-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Tufted perennial from a simple crown, the simple stems usually several, 0.5-2 dm. tall, usually densely hairy with hairs branched in a tree-like fashion.


Basal leaves numerous, 1.5-2 cm. long and 3-5 mm. broad, oblanceolate, narrowed to short petioles, grayish beneath; cauline leaves alternate, several, often overlapping, acute, sessile and auriculate, mostly glabrous.


Inflorescence of 3- to 10-flowered racemes; pedicels 2-6 mm. long; sepals 4, 2.5-3.5 mm. long, not gibbous at the base; petals 4, rose-purple, 4.5-7 mm. long; stamens 6; style none.


Siliques glabrous, often all on one side of the stem, 3.5-4.5 cm. long and 1.5-2 mm. broad, ascending to spreading, straight, 1-nerved half their length; seeds in 1 series, 1.6 mm. long, with a wing 0.3 mm. broad.

Accepted Name:
Boechera lemmonii (S. Watson) W.A. Weber
Publication: Phytologia. 51: 370. 1982.

Synonyms & Misapplications:
Arabis lemmonii S. Watson [HC, Peck]
Arabis lemmonii S. Watson var. lemmonii [HC]
Additional Resources:

PNW Herbaria: Specimen records of Boechera lemmonii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Boechera lemmonii checklist entry.

OregonFlora: Boechera lemmonii information.

E-Flora BC: Boechera lemmonii atlas page.

CalPhotos: Boechera lemmonii photos.

USDA Plants: Boechera lemmonii information.

6 photographs:
Group by