Distribution: Occurring in the Olympic and Cascade Mountains in Washington; Washington to California.
Habitat: Rocky, often moist slopes at high elevations in the mountains.
Growth Duration: Perennial
Conservation Status: Not of concern
Loose-mat-forming perennial from a deep taproot, with numerous sprawling stems often several dm. long.
Leaves alternate, crowded, short-petiolate, the blade up to 3 cm. long and 13 mm. wide; principle leaves deeply and sometimes irregularly 3- to 7-cleft, with some or all of the segments again cleft.
Flowers usually sessile in small, leafy-bracteate clusters at the ends of the stems; corolla tubular-funnelform, 12-15 mm. long, blue or lavender to pink or white, the tube much longer than the 5 lobes; calyx 5-lobed, the tube of uniform papery texture; stamens 5, equally inserted in the corolla tube well below the sinuses; style 3-parted; ovary superior.
Capsule with 3, 1-seeded carpels.
PNW Herbaria: Specimen records of Collomia larsenii in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Collomia larsenii checklist entry.
OregonFlora: Collomia larsenii information.
E-Flora BC: Collomia larsenii atlas page.
CalPhotos: Collomia larsenii photos.
USDA Plants: Collomia larsenii information.