Erigeron breweri var. jacinteus
San jacinto mountains daisy, San Jacinto Mountains Daisy
(c) Jim Morefield, some rights reserved (CC BY), uploaded by Jim Morefield · licence
Family: Asteraceae · Type: Herb · Native
Conservation status: CNPS 4.3
Erigeron breweri var. jacinteus (San jacinto mountains daisy) is a native California herb in the Asteraceae family, recognized by key features: very small prostrate form, high elevation, limited range.
San jacinto mountains daisy is a rare (CNPS 4.3) California native perennial found in the San Gabriel Mountains, San Bernardino Mountains, and San Jacinto Mountains on open, rocky slopes and crests at elevations of 2,700 to 2,900 meters. Flowering from June to September, this plant produces white flowers in small daisy-like heads. Growing with low, prostrate to decumbent stems 7 to 15 centimeters tall, it develops strongly developed woody roots that help it survive in harsh mountain environments. Its leaves are small, 5 to 12 millimeters long, with minimal surface hairs, contributing to its compact alpine growth form. Its inflorescence is characterized by densely glandular phyllaries, giving the plant a distinctive appearance in its rocky mountain habitat.
Identification and appearance
Key characters: 17 sympatric species; key features: very small prostrate form, high elevation, limited range
Habitat and range
Habitat: Open, rocky slopes and crests
Elevation: +- 2700-2900 m.
Bloom period
Erigeron breweri var. jacinteus blooms Jun-Sep.
Conservation status
CNPS 4.3
How to tell it apart
vs Bellis: Erigeron has double-layered pappus (outer scales + inner bristles); Bellis completely lacks pappus.; vs Symphyotrichum: Erigeron has double pappus (2 layers); Symphyotrichum has single layer of uniform bristles.; vs Corethrogyne: Erigeron has simple unbranched stems; Corethrogyne has branched stems.; vs Pseudognaphalium: Erigeron has flat button-like flower heads; Pseudognaphalium has woolly clustered heads without rays.; vs Artemisia: Erigeron has obvious ray petals around yellow disk; Artemisia lacks ray petals entirely.
Frequently asked questions
Is Erigeron breweri var. jacinteus native to California?
Yes. Erigeron breweri var. jacinteus is native to California (recorded as native).
When does Erigeron breweri var. jacinteus bloom?
Erigeron breweri var. jacinteus blooms Jun-Sep.
What plant family does Erigeron breweri var. jacinteus belong to?
Erigeron breweri var. jacinteus is in the Asteraceae family, genus Erigeron.
Is Erigeron breweri var. jacinteus rare or endangered?
Erigeron breweri var. jacinteus carries California Rare Plant Rank 4.3, state rank S3.
What habitat does Erigeron breweri var. jacinteus grow in?
Erigeron breweri var. jacinteus grows in Open, rocky slopes and crests.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CNPS Rare Plant Inventory · 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.