Rhus aromatica

skunk bush, skunkbrush, squawbush

Family:Anacardiaceae

Rarity

CNPS-EB: C

20 current natural populations

Observations

Key

Ecology

Flowers March - May

Habitats:

Dry Wash
Open Dry Slope
Scrub (Coastal or Interior)

References

Synonyms

Rhus aromatica subsp. trilobata
Rhus aromatica var. simplicifolia
Rhus aromatica var. trilobata
Rhus trilobata var. anisophylla
Rhus trilobata var. malacophylla
Rhus trilobata var. quinata
Rhus trilobata var. simplicifolia
Rhus trilobata var. trilobata
Rhus trilobata
Schmaltzia trilobata
Toxicodendron trilobatum

Populations

Key

Location	Pop ID	Last Recorded	Notes
Black Diamond - Nortonville	1	2022-12-31
Black Diamond - Stewartsville	2	2022-12-31
Briones Rgnl Park	3	2022-11-15
Briones Rgnl Park	5	2021-05-23
Franklin Ridge	25	2020-04-09
Franklin Ridge	26	2005-03-26
Lime Ridge area	19	2021-05-14
Lime Ridge area	20	2021-05-24
Marsh Creek Road	30	2024-04-21
Martinez - other or unknown sites	23	2020-03-26
Mt. Diablo State Park - North side	11	2019-04-28
Mt. Diablo State Park - North side	14	2024-05-27
Mt. Diablo State Park - North side	15	2023-04-30
Mt. Diablo State Park - North side	16	2024-04-06
Mt. Diablo State Park - North side	31	2022-03-15
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	32	2018-04-28
Mt. Diablo State Park - West side	8	2020-06-20
Ohlone Rgnl Wilderness	24	2024-08-12
Tilden Rgnl Park - San Pablo Ridge	29	2020-06-07
Tilden Rgnl Park - Vollmer Peak	28	2019-06-16
Bethany Reservoir - S of Byron	6	1999-12-31	Historic
Clayton Ranch - SE of Clayton, EBRPD	7	1999-12-31	Historic
Deer Valley	17	1998-12-31	Historic
Lafayette - other or unknown sites	18	1990-12-31	Historic
Lafayette Ridge, Briones Rgnl Park	4	1998-12-31	Historic
Los Vaqueros Watershed	21	1988-12-31	Historic
Morgan Territory Rgnl Park	22	1992-05-14	Historic
Mt. Diablo State Park - North side	10	1991-04-06	Historic
Mt. Diablo State Park - North side	12	1995-03-18	Historic
Mt. Diablo State Park - South side	13	1993-01-24	Historic
Mt. Diablo State Park - West side	9	1992-04-05	Historic
Shell Ridge	27	1998-12-31	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.