Distribution: Occurring mostly west of the Cascades in Washington; British Columbia to California, east to Idaho.
Habitat: Woods, forest openings and stream banks, low to moderate elevations in the mountains.
Flowers: June-August
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Flies, moths
Annual with sticky, soft hairs at least above, usually with several stems from the base, 0.5-4 dm. tall.
Leaves alternate, the lower pinnatifid, the blade up to 3.5 cm. long and 2 cm. wide; leaves progressively smaller and less divided upward, becoming entire and elliptic below the inflorescence.
Inflorescence of dense, leafy-bracteate clusters terminating the stem and branches; corolla usually pink, occasionally white or lavender, 8-17 mm. long, much longer than the calyx, the tube slender, the 5 lobes short and spreading; calyx tube of uniform, papery texture, with 5 lobes; filaments short, unequally inserted in the corolla tube well below the sinuses; style 3-parted; ovary superior.
Capsule with 3 carpels, each 2- or 3-seeded.
PNW Herbaria: Specimen records of Collomia heterophylla in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Collomia heterophylla checklist entry
OregonFlora: Collomia heterophylla information
E-Flora BC: Collomia heterophylla atlas page
CalPhotos: Collomia heterophylla photos