Species Details

Sidalcea robusta

Butte County checkerbloom

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Classification

Scientific Name: Sidalcea robusta Roush
Common Name: Butte County checkerbloom
Family:	Malvaceae
Element Code:	PDMAL110P0
USDA Plants Symbol:	SIRO2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S; SB_UCSC
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Apr-Jun

Elevation:
90 - 1600 meters
295 - 5250 feet

General Habitats:

Chaparral
Cismontane woodland

Microhabitat Details:

Microhabitat:

Notes

Notes: Threatened by non-native plants. Possibly threatened by residential development and fire suppression. See Annals of the Missouri Botanical Garden 18:205-207 (1931) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	12
	Total EOs	% of EOs
EOs with Threat Listed:	9	24 %
Grazing	5	13%
Other	4	10%
Development	3	7%
ORV activity	2	5%
Erosion/runoff	1	2%
Foot traffic/trampling	1	2%
Agriculture	1	2%
Biocides	1	2%
Recreational use (non-ORV)	1	2%
Road/trail construction/maint.	1	2%
Improper burning regime	1	2%
Non-native plant impacts	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					38
A	B	C	D	X	U
3	5	1	0	1	28

Occurrence Status:
Historical >20 Years	26
Recent <=20 Years	12

Presence:
Presumed Extant	37
Possibly Extirpated	1
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Butte (BUT)

Quads: Name (Quad Code)
Cherokee (3912165), Chico (3912167), Cohasset (3912186), Hamlin Canyon (3912166), Paradise West (3912176), Richardson Springs (3912177)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory