Page authors: Don Knoke, David Giblin
Leptosiphon bolanderi
Bolander's desert-trumpets, Baker's linanthus

Distribution: Occurring east of the Cascades crest in the Columbia River Gorge in Washington; Klickitat County, Washington to California.

Habitat: Dry, open places at lower elevations, often on serpentine.

Flowers: April-May

Origin: Native

Growth Duration: Annual

Conservation Status: Sensitive in Washington (WANHP)

Pollination: Bees, flies, butterflies


Slender annual up to 2.5 dm., with stalked glands on the pedicles, otherwise sub-glabrous.


Leaves opposite, sessile, palmately 3- to 7-parted, less than 1 cm. long.


Inflorescence open, the flowers single and terminal on the branches; pedicles slender and elongate; calyx 3.5-5 mm. long, the tube longer than the 5 teeth, the herbaceous portions wider than the connecting translucent membrane; corolla white to pink or violet, sometimes bicolored, the slender tube exserted from the calyx, with a ring of hairs near the middle; corolla lobes 5, about half as long as the tube; stamens 5, the filaments attached just below the sinuses in the corolla tube; style 3-parted; ovary superior.


Capsule usually with 3, several-seeded carpels.

Accepted Name:
Leptosiphon bolanderi (A. Gray) J.M. Porter & L.A. Johnson
Publication: Aliso 19(1): 80. 2000.

Synonyms & Misapplications:
Linanthus bakeri H. Mason [HC]
Linanthus bolanderi (A. Gray) Greene [JPM]
Additional Resources:

PNW Herbaria: Specimen records of Leptosiphon bolanderi in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Leptosiphon bolanderi checklist entry

OregonFlora: Leptosiphon bolanderi information

E-Flora BC: Leptosiphon bolanderi atlas page

CalPhotos: Leptosiphon bolanderi photos

11 photographs:
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