Elymus trachycaulus subsp. trachycaulus

slender wheat grass

Family:Poaceae

Rarity

CNPS-EB: A1

2 current natural populations

Criteria:

Small Geographical Range
Small Populations
Declining

Observations

Key

Ecology

Flowers June - August

Habitats:

Forest
Open Dry Slope
Woodland

All Elymus

E. elymoides var. elymoides (B)
E. mollis subsp. mollis (A1x)
E. multisetus (B-PV)
E. stebbinsii (A1x)
E. trachycaulus subsp. trachycaulus
E. xsaundersii (A1x)

References

Synonyms

Agropyron trachycaulum
Elymus trachycaulus subsp. subsecundus

Populations

Key

Location	Pop ID	Last Recorded	Notes
Skyline Serpentine Prairie, Redwood Rgnl Park	17	2020-06-01
UC Field Station, Richmond	15	2000-06-16
Briones Reservoir, EBMUD	1	1999-12-31	Historic
Brushy Peak Rgnl Park - LARPD	2	1997-12-31	Historic
Chabot Rgnl Park	3	1991-02-10	Historic
Kensington	11	1995-12-31	Historic
Las Trampas Rgnl Wilderness	13	1992-02-09	Historic
Los Mochos Boy Scout Camp, Mines Rd	12	1996-12-31	Historic
Morgan Territory Rgnl Park	14	1990-07-08	Historic
Mt. Diablo State Park - North side	4	1932-10-16	Historic
Mt. Diablo State Park - North side	5	1942-12-31	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	6	1996-04-14	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	7	1994-06-19	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	8	1996-02-11	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	10	1935-12-31	Historic
San Francisco Water District land, Sunol	16	1973-06-20	Historic
Skyline Serpentine Prairie, Redwood Rgnl Park	9	1996-02-11	Historic
Tilden Rgnl Park - other or unknown sites	18	1989-12-31	Historic
UC Field Station, Richmond	21	1995-12-31	Historic
Wildcat Rgnl Park	19	1989-12-31	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.