Psilocarphus brevissimus var. brevissimus

dwarf woollyheads, dwarf woolly-marbles

Family:Asteraceae

Rarity

CNPS-EB: B

11 current natural populations

Criteria:

Limited/Threatened Habitat

Observations

Key

Ecology

Flowers May - June

Habitats:

Vernal Pool

All Psilocarphus

P. brevissimus var. brevissimus
P. brevissimus var. multiflorus (*A1?)
P. chilensis (A1)
P. oregonus (A2)

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Brushy Peak - EBRPD	23	2024-03-25
Byron Hot Springs area	4	2007-05-01
Clifton Court Forebay - E of Byron	5	2018-02-22
Corral Hollow Area	6	2009-03-31
Dublin, E of 680, N of 580	21	2019-12-31
Fremont Shoreline	18	2022-03-27
Springtown Wetlands Preserve	13	2022-05-21
Springtown Wetlands Preserve	19	2024-04-24
Springtown Wetlands Preserve	20	2022-03-31
Vasco Hills	22	2023-04-07
Warm Springs, Fremont	15	2019-05-20
Antioch - other or unknown sites	1	1896-12-31	Historic
Byron - other or unknown sites	2	1952-12-31	Historic
Byron Hot Springs area	3	1992-04-25	Historic
Deer Valley	8	1998-12-31	Historic
Horse Valley - W of Brentwood, S of Antioch	9	1998-12-31	Historic
Lawrence Livermore Lab, Site 300, Corral Hollow	16	1986-12-31	ID Uncertain
Leona Heights Rgnl Park, or nearby	17	1998-06-01	ID Uncertain
Los Vaqueros Watershed	10	1989-12-31	Historic
Mt. Diablo State Park - West side	7	1992-04-03	Historic
Mt. Eden	11	1893-12-31	Historic
Ohlone Rgnl Wilderness	12	1992-05-24	Historic
Sycamore Grove Rgnl Park - LAPRD	14	1991-12-31	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.