Page authors: David Giblin, Don Knoke
Ladeania lanceolata
wild lemonweed, lemon scurfpea, lance-leaf scurfpea

Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Great Plains.

Habitat: Sagebrush steppe habitat in dry areas, often where sandy.

Flowers: May-June

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Strongly glandular perennial, the stems 3-6 dm. tall, freely branching.


Leaves trifoliate, greenish, leaflets narrowly elliptic-oblanceolate to narrowly obovate, 2-3 cm. long; stipules free of the petioles, the lower ones up to 2 cm. long, the upper reduced.


Inflorescence of fairly dense, 10- to 40-flowered racemes on axillary peduncles that are shorter than the leaves; flowers pea-like, 4-7 mm. long, white to gray-blue, the keel often bluish tipped; calyx bell-shaped, the 5 teeth equal, very short; banner only slightly longer than the keel and oblong wings.


Pod 4-5 mm. long, elliptic-globose, strongly glandular-warty.

Accepted Name:
Ladeania lanceolata (Pursh) A.N. Egan & Reveal
Publication: Novon 19(3): 312. 2009. 2009.

Synonyms & Misapplications:
Laedeania lanceolata (Pursh) A.N. Egan & Reveal, orthographic variant [JPM2]
Psoralea lanceolata Pursh [HC]
Psoralea lanceolata Pursh ssp. scabra (Nutt.) Piper
Psoralea lanceolata Pursh var. purshii (Vail) Piper
Psoralea lanceolata Pursh var. stenophylla (Rydb.) Toft & S.L. Welsh
Psoralea lanceolata Pursh var. stenostachys (Rydb.) S.L. Welsh
Psoralea scabra Nutt.
Psoralea stenostachys Rydb.
Psoralidium lanceolatum (Pursh) Rydb. [IMF]
Psoralidium lanceolatum (Pursh) Rydb. var. stenophyllum (Rydb.) S.L. Welsh
Psoralidium lanceolatum (Pursh) Rydb. var. stenostachys (Rydb.) S.L. Welsh
Psoralidium stenophyllum (Rydb.) Rydb.
Additional Resources:

PNW Herbaria: Specimen records of Ladeania lanceolata in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Ladeania lanceolata checklist entry.

E-Flora BC: Ladeania lanceolata atlas page.

CalPhotos: Ladeania lanceolata photos.

USDA Plants: Ladeania lanceolata information.

24 photographs:
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