Glebionis segetum
Corn chrysanthemum, Corn Chrysanthemum
(c) Andrea Moro, some rights reserved (CC BY-SA) · licence
Family: Asteraceae · Type: Herb · Not Native
Glebionis segetum (Corn chrysanthemum) is a non-native California herb in the Asteraceae family, recognized by key differences in flower color and coastal habitat preference.
Corn chrysanthemum is a naturalized annual found in northern Coastal California and southern Coastal California in coastal areas, fields, and sea bluffs at elevations below 200 meters. Flowering from April to October, this plant produces bright yellow ray flowers in large flower heads 2.5 to 6 centimeters in diameter. Growing with stems up to 80 centimeters tall, it spreads readily in disturbed coastal landscapes. Its leaves are oblong to obovate, measuring up to 6 centimeters long, with a soft green appearance. The fruit is slightly compressed with lateral wings, approximately 2 millimeters long.
Identification and appearance
Key characters: 1 sympatric species; key differences in flower color and coastal habitat preference
Habitat and range
Habitat: Escape in coastal areas, fields, sea bluffs
Elevation: < 200 m
Outside California: native to Europe, southwestern Asia
Bloom period
Glebionis segetum blooms Apr-Oct.
How to tell it apart
vs Euryops: Glebionis is herbaceous annual; Euryops is woody shrub.; vs Layia: Glebionis has fern-like deeply dissected leaves; Layia has simple narrow leaves.; vs Cota: Glebionis has loose flower arrangement; Cota has dense rounded flower heads in clusters.; vs Leptosyne: Glebionis has fern-like leaves in bushy form; Leptosyne has thread-like leaves on tall stems.; vs Eriophyllum: Glebionis lacks woolly coating; Eriophyllum is covered in dense gray-white wool.
Frequently asked questions
Is Glebionis segetum native to California?
No. Glebionis segetum is not native to California (recorded as not native).
When does Glebionis segetum bloom?
Glebionis segetum blooms Apr-Oct.
What plant family does Glebionis segetum belong to?
Glebionis segetum is in the Asteraceae family, genus Glebionis.
What habitat does Glebionis segetum grow in?
Glebionis segetum grows in Escape in coastal areas, fields, sea bluffs.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · 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.