Psilocarphus oregonus

Oregon woollyheads, Oregon woolly-marbles

Family:Asteraceae

Rarity

CNPS-EB: B

9 current natural populations

Criteria:

Limited/Threatened Habitat

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Psilocarphus
- Psilocarphus oregonus
CCH2

Key

Ecology

Flowers March - July

Habitats:

Vernal Pool

All Psilocarphus

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Brushy Peak - EBRPD	16	2025-04-30
Byron - other or unknown sites	12	2022-03-17
Contra Loma Rgnl Park	15	2024-04-05
Dublin, E of 680, N of 580	5	2006-04-30
Livermore - other or unknown sites	17	2024-05-15
Los Vaqueros Watershed	8	2003-04-27
Marsh Creek State Park - formerly Cowell Ranch	4	2017-03-25
Mines Road/Arryo Mocho	14	2022-04-26
Warm Springs, Fremont	11	2019-05-20
Antioch - other or unknown sites	1	1959-12-31	Historic
Brentwood area	2	1893-05-05	Historic
Byron Hot Springs area	3	1996-12-31	Historic
Deer Valley	6	1994-12-31	Historic
Garaventa Wetlands Preserve	10	1996-07-29	Historic
Los Vaqueros Watershed	7	1992-04-25	Historic
Ohlone Rgnl Wilderness	9	1992-05-24	Historic
Springtown Wetlands Preserve	13	1991-06-23	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.