Hesperevax caulescens

hogwallow starfish

Family:Asteraceae

Rarity

CNPS-EB: *A2
State CNPS: 4.2
Global Rank: G3
CNDDB Rank: S3

6 current natural populations

Criteria:

Limited/Threatened Habitat

Observations

Key

Ecology

Flowers March - June

Habitats:

Vernal Pool

All Hesperevax

H. acaulis var. ambusticola (A1x)

H. caulescens

References

Synonyms

Evax caulescens

Populations

Key

Location	Pop ID	Last Recorded	Notes
Bethany Reservoir - S of Byron	3	2015-03-12
Contra Loma Rgnl Park	2	2022-03-14
Lawrence Livermore Lab, Site 300, Corral Hollow	7	2002-12-31
Los Vaqueros Watershed	6	2022-02-27
Los Vaqueros Watershed	10	2022-02-27
Marsh Creek State Park - formerly Cowell Ranch	4	2003-12-31
Altamont Pass	1	1946-04-01	Historic
Briones Reservoir, EBMUD	8	1990-12-31	ID Uncertain
Deer Valley	5	1994-12-31	Historic
San Pablo Creek North - EBMUD	9	1990-12-31	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.