Malacothamnus fremontii var. fremontii

white-coat mallow

Family:Malvaceae

Rarity

CNPS-EB: B-PV

21 current natural populations

Criteria:

Small Populations
Fire Follower

Observations

Key

Ecology

Flowers May - July

Habitats:

Burns
Chaparral
Woodland

All Malacothamnus

M. fremontii var. fremontii
M. hallii (*A2)

References

Synonyms

Malacothamnus fremontii subsp. cercophorus
Malacothamnus howellii
Malvastrum fremontii
Malvastrum fremontii var. cercophorum
Malvastrum howellii
Malvastrum howellii var. cordatum
Malveopsis fremontii
Sphaeralcea fremontii
Sphaeralcea fremontii var. cercophora

Resources

Morse, Keir (2023). Malacothamnus Volume 3 - A Revised Treatment of the Genus Malacothamnus (Malvaceae) Based on Morphological and Phylogenetic Evidence. figshare. Book.

Populations

Key

Location	Pop ID	Last Recorded	Notes
Black Diamond - Sommersville	1	2022-12-31
Black Diamond - Stewartsville	2	2022-12-31
Black Diamond - Stewartsville	4	2021-04-10
Black Diamond - Stewartsville	5	2022-12-31
Black Diamond - Stewartsville	6	2022-12-31
Black Diamond Rgnl Preserve	3	2006-12-31
Del Valle Regional Park	19	2025-06-20
Del Valle Regional Park	25	2025-05-24
Mines Road/Arryo Mocho	23	2024-05-29
Mines Road/Arryo Mocho	24	2024-05-29
Morgan Territory Rgnl Park	8	2025-06-08
Morgan Territory Rgnl Park	9	2024-06-02
Morgan Territory Rgnl Park	26	2025-07-05
Mt. Diablo State Park - North side	14	2021-05-28
Mt. Diablo State Park - South side	15	2010-07-08
Mt. Diablo State Park - South side	16	2021-04-23
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	17	2021-04-23
Round Valley Rgnl Park	10	2021-04-11
San Francisco Water District land, Sunol	18	2009-12-31
Sand Creek	11	2002-12-31
Tesla, Corral Hollow	20	2023-05-05
Cedar Mountain	21	1926-12-31	Historic
Deer Valley	7	1998-12-31	Historic
Diablo Foothills Rgnl Park	12	1994-12-31	Historic
Los Mochos Boy Scout Camp, Mines Rd	22	1996-07-12	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	13	1999-12-31	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.