Page author: David Giblin
Boechera microphylla
littleleaf rockcress, small-leaved rockcress
Note the several flowering stems arising from the basal rosette of narrow leaves. Flowers appear on the upper portion of the flowering stem and have pink-purplish petals.
The narrow leaves of the basal rosette and the flowering stem. Note the leaves of the flowering stem are attached directly without a petiole (sessile). Also note how the hairs of the leaves and stems produce a grayish-white appearance.

Distribution: Occurring in Washington east of the Cacades crest; British Columbia south to eastern Oregon, east to Montana and Wyoming.

Habitat: Low montane to subalpine.

Flowers: April-July

Origin: Native

Conservation Status: Not of concern


Bunch-forming perennial with a multi-branched, somewhat woody base. Plants typically produce several erect, slender flowering stems 1-2 dm tall (sometimes up to 7 dm.). The stems often hairy.


Basal leaves narrow (2-3 cm. long by 2-4 mm. wide), somewhat toothed, and forming a rosette; stem leaves narrow (1-2.5 cm. wide by 2-5 mm. wide),without a petiole (sessile), and with ear-like extensions (auricles) at the base that somewhat wrap around the stem.


Petals pink to purplish, 5-8 mm. long; 3-25 flowers arranged along the upper portion of the flowering stem (inflorescence).



Accepted Name:
Boechera microphylla (Nutt.) Dorn
Publication: Vasc. Pl. Wyoming ed. 3. 376. 2001. 2001.

Synonyms & Misapplications:
Arabis microphylla Nutt. [HC]
Arabis microphylla Nutt. var. microphylla [HC]
Additional Resources:

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

WA Flora Checklist: Boechera microphylla checklist entry.

E-Flora BC: Boechera microphylla atlas page.

CalPhotos: Boechera microphylla photos.

USDA Plants: Boechera microphylla information.

27 photographs:
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