Layia chrysanthemoides

smooth layia

Family:Asteraceae

Rarity

CNPS-EB: B

8 current natural populations

Criteria:

Small Populations
Declining

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Layia
- Layia chrysanthemoides
CCH2

Key

Ecology

Flowers March - June

Habitats:

Grassland (Annual or Perennial)

All Layia

L. chrysanthemoides
L. gaillardioides (B-PV)
L. glandulosa (A1x)
L. hieracioides (B-PV)
L. platyglossa (B-PV)

References

Synonyms

Layia chrysanthemoides subsp. maritima

Populations

Key

Location	Pop ID	Last Recorded	Notes
Byron - other or unknown sites	5	2022-03-07
Byron - other or unknown sites	17	2019-05-20
Claremont Canyon Rgnl Park	18	2022-04-07
Del Valle Regional Park	20	2025-05-07
Dublin, E of 680, N of 580	19	2019-12-31
Hercules - other or unknown sites	11	2004-03-19
Oakland Hills - South	15	2018-04-08
Oakland Hills - South	16	2019-05-12
Altamont Pass	1	1946-12-31	Historic
Antioch Dunes	2	1929-12-31	Historic
Byron - other or unknown sites	3	1937-12-31	Historic
Byron - other or unknown sites	4	1930-12-31	Historic
Fremont Flatlands and Hills	6	1974-04-03	Historic
Livermore Valley	7	1957-12-31	Historic
Newark	8	1895-12-31	Historic
Newark	9	1933-12-31	Historic
Richmond Hills	10	1939-12-31	Historic
Sycamore Grove Rgnl Park - LAPRD	13	1991-04-15	Historic
Wildcat Canyon Area	14	1899-05-07	Historic

The list of populations shows the distinct populations identified by the CNPS-EB Rare and Unusual Plants Committee. The locations in this list are very general. More specific location details can be obtained from the links in the Observations section (for some of these links, a login is required).

Font

Populations in bold type have precise coordinates available for field volunteers and researchers.

Populations in normal type are only known from a description of the location; no precise coordinates are available.

Background

Populations with a white background have been observed in the last 25 years.

Populations with a blue background have not been observed for at least 25 years.

Populations with an orange background have an uncertain location or identification, or are planted.

Columns

Pop ID is a label that identifies the population. Many locations have more than one population of a species, and the population ID is used to distinguish them.