Doellingeria glabrata
Siskiyou aster, Siskiyou Aster
(c) Trevor Van Loon, some rights reserved (CC BY), uploaded by Trevor Van Loon · licence
Family: Asteraceae · Type: Subshrub · Native
Conservation status: CNPS 4.3
Doellingeria glabrata (Siskiyou aster) is a native California subshrub in the Asteraceae family, recognized by mostly discoid or few-rayed vs consistently many-rayed congeners.
Siskiyou aster is a California native perennial ranked 4.3 by CNPS, found in the Klamath Ranges and northern Coast Ranges in dry oak and conifer forest, on rocky sites at elevations of 700 to 2,400 meters. Flowering from July to October, this plant produces pale violet ray flowers with white-based, green to purple-tipped phyllaries in discoid or rarely rayed heads. Growing with erect stems 30 to 60 centimeters tall that are glabrous to slightly glandular-hairy, it forms loose cyme-like clusters. Its lanceolate to lance-ovate leaves are 3 to 6 centimeters long, generally obtuse, and nearly glabrous on both surfaces. The flower heads are arranged in loose clusters, with phyllaries that are unequal, oblong to narrowly ovate, and acute.
Identification and appearance
Key characters: 4 sympatric species; mostly discoid or few-rayed vs consistently many-rayed congeners
Habitat and range
Habitat: dry oak or conifer forest, rocky places
Elevation: 700-2400 m
California counties: Del Norte, Humboldt, Siskiyou, Trinity, Mendocino, Shasta
Outside California: southern Oregon
Bloom period
Doellingeria glabrata blooms Jul-Oct.
Conservation status
CNPS 4.3
Frequently asked questions
Is Doellingeria glabrata native to California?
Yes. Doellingeria glabrata is native to California (recorded as native).
When does Doellingeria glabrata bloom?
Doellingeria glabrata blooms Jul-Oct.
Where in California does Doellingeria glabrata grow?
Doellingeria glabrata occurs in Del Norte, Humboldt, Siskiyou, Trinity, Mendocino, Shasta, at elevations of 700-2400 m.
What plant family does Doellingeria glabrata belong to?
Doellingeria glabrata is in the Asteraceae family, genus Doellingeria.
Is Doellingeria glabrata rare or endangered?
Doellingeria glabrata carries California Rare Plant Rank 4.3, state rank S3.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · Index of California Plant Names · CalPhotos · CDFW CNDDB
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.