Plagiobothrys trachycarpus

rough-nutlet popcornflower, rough-fruited allocarya

Family:Boraginaceae

Rarity

CNPS-EB: C

13 current natural populations

Criteria:

Narrow Range in ALA & CCA
N Limit

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Plagiobothrys
- Plagiobothrys trachycarpus
CCH2

Key

Ecology

Flowers March - May

Habitats:

Miscellaneous
Vernal Pool

All Plagiobothrys

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Contra Loma Rgnl Park	2	2022-02-20
Dublin, E of 680, N of 580	7	2008-04-04
Dublin, E of 680, N of 580	23	2019-12-31
Hercules - other or unknown sites	12	2004-03-19
Lawrence Livermore Lab, Site 300, Corral Hollow	24	2021-12-31
Lone Tree Valley, Antioch	14	2005-12-31
Los Vaqueros Watershed	15	2025-03-22
Los Vaqueros Watershed	22	2022-03-14
Marsh Creek - other or unknown sites	17	2008-04-06
Morgan Territory Rgnl Park	16	2011-05-04
Ohlone Rgnl Wilderness	21	2020-05-23
Round Valley Rgnl Park	19	2003-03-28
Tesla, Corral Hollow	6	2016-04-02
Black Diamond Rgnl Preserve	1	1998-05-13	Historic
Brushy Peak Rgnl Park - LARPD	3	1997-12-31	Historic
Byron Hot Springs area	4	1993-03-28	Historic
Chabot Rgnl Park	5	1982-12-31	Historic
Danville	10	1998-12-31	Historic
Deer Valley	11	1994-12-31	Historic
Lime Ridge area	13	1996-12-31	Historic
Mt. Diablo State Park - West side	8	2000-03-19	Historic
Pinole Creek	18	1987-12-31	Historic
Shell Ridge	9	1979-03-31	Historic
Sunol Rgnl Wilderness	20	1962-12-31	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.