Calamagrostis rubescens

pine reed grass, pine grass

Family:Poaceae

Rarity

CNPS-EB: B

10 current natural populations

Criteria:

E Limit
Small Populations

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Calamagrostis
- Calamagrostis rubescens
CCH2

Key

Ecology

Flowers June - September

Habitats:

Woodland

All Calamagrostis

C. koelerioides (A1?)
C. nutkaensis (A1x)
C. rubescens

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Bollinger Canyon, Moraga	10	2003-12-31
Briones Reservoir, EBMUD	3	2026-08-05
Flicker Ridge - EBMUD	6	2026-08-02
Huckleberry Rgnl Preserve	7	2026-08-14
Kennedy Grove Rgnl Park	8	2026-08-07
Knowland Park, Oakland	9	2003-05-05
Mt. Diablo State Park - South side	4	2026-07-30
Redwood Rgnl Park	17	2022-04-01
Sibley Rgnl Park	14	2016-07-10
Siesta Valley, Upper - EBMUD land	15	2017-12-31
Briones Rgnl Park	2	1995-12-31	Historic
EBMUD land on San Pablo Ridge	11	1999-12-31	Historic
EBMUD land on San Pablo Ridge	12	1999-12-31	Historic
Lafayette Ridge, Briones Rgnl Park	1	1997-12-31	Historic
Mt. Diablo State Park - South side	5	1999-12-31	Historic
San Ramon, W of 680	13	1998-12-31	Historic
Wildcat Canyon Area	16	1942-08-16	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.