Campanula scouleri
Scouler's harebell
(c) Parker James Lloyd, some rights reserved (CC BY) · licence
Family: Campanulaceae · Type: Herb · Native
Campanula scouleri (Scouler's harebell) is a native California herb in the Campanulaceae family, recognized by broad toothed leaves and woodland habitat.
Scouler's harebell is a California native perennial found in the Klamath Ranges, northern Coast Ranges, and Mount Shasta region in shaded woodlands and streamside habitats at elevations of 100 to 1,900 meters. Flowering from June to August, this plant produces pale blue flowers in widely bell-shaped blossoms 8 to 15 millimeters long with delicate reflexed lobes. Growing with reclining to erect stems 20 to 30 centimeters tall, it has narrow winged leaf petioles and thin to leathery leaves. Its leaves are widely lanceolate to nearly round, 10 to 60 millimeters long with serrated edges. The fruit is an obconic shape with weakly ribbed surfaces and pores near the middle.
Identification and appearance
Key characters: 3 sympatric species; distinguished by broad toothed leaves and woodland habitat
Habitat and range
Habitat: Shaded woodland, streamsides
Elevation: 100-1900 m
California counties: Humboldt, Trinity, Siskiyou, Del Norte, Butte, Plumas, Shasta, Marin, Sierra, Mendocino, Modoc
Outside California: to Alaska
Bloom period
Campanula scouleri blooms Jun-Aug.
How to tell it apart
vs Smithiastrum: Campanula has bell-shaped flowers split less than halfway; Smithiastrum flowers are tube-shaped with tiny lobes.; vs Phacelia: Phacelia flowers spiral on coiled stems with protruding stamens; Campanula bells hang singly on straight stalks.; vs Triteleia: Triteleia has 6-petaled flowers from a bulb; Campanula has 5-lobed bells from fibrous perennial roots.; vs Eastwoodiella: Eastwoodiella has deeply divided star-like petals; Campanula bells are only partially split.; vs Triodanis: Triodanis is annual with flat wheel flowers pressed to stem; Campanula is perennial with stalked bells.
Frequently asked questions
Is Campanula scouleri native to California?
Yes. Campanula scouleri is native to California (recorded as native).
When does Campanula scouleri bloom?
Campanula scouleri blooms Jun-Aug.
Where in California does Campanula scouleri grow?
Campanula scouleri occurs in Humboldt, Trinity, Siskiyou, Del Norte, Butte, Plumas, Shasta, Marin and other counties, at elevations of 100-1900 m.
What plant family does Campanula scouleri belong to?
Campanula scouleri is in the Campanulaceae family, genus Campanula.
What habitat does Campanula scouleri grow in?
Campanula scouleri grows in Shaded woodland, streamsides.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · Index of California Plant Names · CalPhotos
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.