Pleuropogon californicus var. californicus

semaphore grass

Family:Poaceae

Rarity

CNPS-EB: B-PV

13 current natural populations

Criteria:

Limited/Threatened Habitat
S Limit

Observations

Key

Ecology

Flowers March - June

Habitats:

Miscellaneous Wetlands
Riparian

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Altamont Pass	2	2021-04-04
Brushy Peak - EBRPD	19	2025-04-09
Diablo Foothills Rgnl Park	11	2021-05-01
Dublin, E of 680, N of 580	3	2019-12-31
Dublin, E of 680, N of 580	4	2006-12-31
Gateway area	20	2023-06-25
Pt. Pinole Rgnl Park	12	2023-05-01
Springtown Wetlands Preserve	6	2018-04-26
Springtown Wetlands Preserve	18	2025-04-24
Springtown Wetlands Preserve	21	2024-05-06
Sunol Rgnl Wilderness	14	2009-05-20
Vasco Caves Rgnl Park	7	2010-04-15
Warm Springs, Fremont	17	2025-04-19
Alameda Area	1	1888-05-31	Historic
Concord - other or unknown sites	5	1956-04-28	Historic
Franklin Canyon	9	1929-04-21	Historic
Hercules - other or unknown sites	10	1997-12-31	Historic
Los Vaqueros Watershed	8	1983-12-31	Historic
Newark	16	1959-04-11	Historic
Oakland - other or unknown sites	15	1867-12-31	Historic
Ohlone Rgnl Wilderness	13	1991-05-20	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.