Page author: Don Knoke
Mertensia oblongifolia
languid lady, leafy lungwort

Distribution: Uncommon east of the Cascades in Washington to California, east to South Dakota

Habitat: Deeper soils in shrub-steppe

Flowers: June - August

Origin: Native

Conservation Status: Not of concern


Perennial from a stout root, the several stems 1-4 dm. tall; herbage glabrous or appressed-pubescent.


Basal leaves petiolate, the blade elliptic to oblanceolate or lance-ovate, 2-15 cm. long and 0.7-6 cm. wide; cauline leaves well-developed, rather numerous, 2.5-7 times as long as wide, becoming sessile above.


Inflorescence congested, many-flowered, terminal; calyx 2.5-6 mm. long, cleft nearly to the base; corolla blue, 5-lobed, 1-2 cm. long, the tube 1.3 to 2 times as long as the slightly expanded limb; filaments broad, longer than the anthers; style equaling the corolla lobes; nutlets attached to the lower half of the style; hairy appendages opposite the corolla lobes at the top of the tube.


4 nutlets.

Accepted Name:
Mertensia oblongifolia (Nutt.) G. Don

Synonyms & Misapplications:
Mertensia oblongifolia (Nutt.) G. Don var. oblongifolia [JPM]
Mertensia perplexa Rydb. [HC]
Mertensia viridis (A. Nelson) A. Nelson [HC]
Additional Resources:

PNW Herbaria: Specimen records of Mertensia oblongifolia in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Mertensia oblongifolia checklist entry.

E-Flora BC: Mertensia oblongifolia atlas page.

CalPhotos: Mertensia oblongifolia photos.

USDA Plants: Mertensia oblongifolia information.

23 photographs:
Group by