Helianthella californica var. californica

California helianthella

Family:Asteraceae

Rarity

CNPS-EB: B

9 current natural populations

Criteria:

S Limit

Observations

Key

Ecology

Flowers April - June

Habitats:

Grassland (Annual or Perennial)
Woodland

All Helianthella

H. californica var. californica
H. castanea (*A2)

References

Synonyms

Helianthella californica subsp. californica

Populations

Key

Location	Pop ID	Last Recorded	Notes
Los Mochos Boy Scout Camp, Mines Rd	2	2023-05-20
Ohlone Rgnl Wilderness	5	2020-05-21
Ohlone Rgnl Wilderness	8	2024-05-24
Ohlone Rgnl Wilderness	11	2024-05-26
San Francisco Water District land, Sunol	1	2009-06-30
Sunol Rgnl Wilderness	6	2025-05-25
Sunol Rgnl Wilderness	7	2025-05-22
Sunol Rgnl Wilderness	10	2024-06-03
Sunol Rgnl Wilderness	12	2023-05-07
Lafayette - other or unknown sites	9	1990-05-11	Historic
Las Trampas Rgnl Wilderness	3	1990-12-31	ID Uncertain
Mines Road/Arryo Mocho	4	1995-06-11	ID Uncertain

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.