Frangula californica subsp. tomentella

Rarity

CNPS-EB: B

13 current natural populations

Observations

Key

Ecology

Flowers January - April

Habitats:

Chaparral
Woodland

References

Synonyms

Rhamnus californica subsp. tomentella
Rhamnus californica var. tomentella
Rhamnus tomentella subsp. tomentella
Rhamnus tomentella

Populations

Key

Location	Pop ID	Last Recorded	Notes
Los Vaqueros Watershed	17	2008-12-09
Mines Road/Arryo Mocho	3	2015-04-06
Mines Road/Arryo Mocho	4	2023-08-03
Mt. Diablo State Park - North side	27	2007-04-23
Ohlone Rgnl Wilderness	10	2021-04-22
Ohlone Rgnl Wilderness	11	2023-05-26
Ohlone Rgnl Wilderness	12	2013-04-30
Ohlone Rgnl Wilderness	13	2020-05-21
Ohlone Rgnl Wilderness	14	2020-04-24
Ohlone Rgnl Wilderness	26	2019-09-17
Ohlone Rgnl Wilderness	28	2024-06-28
Sunol Rgnl Wilderness	8	2022-07-01
Sycamore Grove Rgnl Park - LAPRD	7	2001-12-31
Briones Rgnl Park	1	1998-12-31	Historic
Calaveras Road	9	1997-04-13	Historic
Cedar Mountain	2	1993-04-10	Historic
Los Mochos Boy Scout Camp, Mines Rd	6	1994-04-24	Historic
Marsh Creek Road	15	1930-12-31	Historic
Mines Road/Arryo Mocho	5	1935-12-31	Historic
Morgan Territory Rgnl Park	16	1996-12-31	Historic
Mt. Diablo State Park - East side	18	1997-12-31	Historic
Mt. Diablo State Park - East side	21	1996-04-14	Historic
Mt. Diablo State Park - North side	19	1993-04-04	Historic
Mt. Diablo State Park - North side	20	1999-12-31	Historic
Mt. Diablo State Park - South side	24	1933-05-21	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	22	1996-04-14	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	23	1904-12-31	Historic
Mt. Diablo State Park - unspecified or multiple sites	25	1916-12-31	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.