Species Details

Sidalcea malachroides

maple-leaved checkerbloom

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Classification

Scientific Name: Sidalcea malachroides (H. & A.) Gray
Common Name: maple-leaved checkerbloom
Family:	Malvaceae
Element Code:	PDMAL110E0
USDA Plants Symbol:	SIMA
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	4.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:
CRPR Changes: changed from 1B to 4 on 2006-06-01 changed from 1B.2 to 4.2 on 2003-04-04
Add Date:	1994-01-01
Date Edited:	2022-06-08

Ecology and Life History

Lifeform: perennial herb

Blooming Period: (Mar)Apr-Aug

Elevation:
0 - 730 meters
0 - 2395 feet

General Habitats:

Broadleafed upland forest
Coastal prairie
Coastal scrub
North Coast coniferous forest
Riparian woodland

Microhabitat Details:

Microhabitat:

Disturbed areas (often)

Notes

Notes: SCL Co. (427A) occurrence based on old specimen, needs confirmation. Threatened by logging and associated road usage, non-native plants, competition, low reproduction, road maintenance, and development. Endangered in OR. See University of Washington Publications in Biology 18:1-96 (1957) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	13
	Total EOs	% of EOs
EOs with Threat Listed:	109	80 %
Logging	93	68%
Road/trail construction/maint.	83	61%
Non-native plant impacts	15	11%
Other	12	8%
Biocides	8	5%
ORV activity	4	2%
Grazing	3	2%
Foot traffic/trampling	2	1%
Altered flood/tidal/hydrologic regime	1	0%
Development	1	0%
Improper burning regime	1	0%
Mining	1	0%
Recreational use (non-ORV)	1	0%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					136
A	B	C	D	X	U
4	15	41	43	2	31

Occurrence Status:
Historical >20 Years	136
Recent <=20 Years	0

Presence:
Presumed Extant	134
Possibly Extirpated	2
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)*

California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Mendocino (MEN), Monterey (MNT), Santa Clara (SCL), Santa Cruz (SCR), Sonoma (SON)

Quads: Name (Quad Code)
Ah Pah Ridge (4112348), Albion (3912327), Arcata North (4012481), Arcata South (4012471), Bear Harbor (3912388), Big Sur (3612137), Blue Lake (4012388), Bridgeville (4012347), Calaveras Reservoir (3712147), Cape Mendocino (4012444), Childs Hill (4112461), Cold Spring (3912315), Comptche (3912335), Crescent City (4112472), Dutchmans Knoll (3912356), Elk (3912326), Eureka (4012472), Eureka Hill (3812385), Fern Canyon (4112441), Ferndale (4012453), Fields Landing (4012462), Fort Bragg (3912347), Gualala (3812375), Hales Grove (3912377), High Divide (4112481), Hydesville (4012451), Iaqua Buttes (4012368), Inglenook (3912357), Korbel (4012378), Laurel (3712118), Lord-ellis Summit (4012387), Mallo Pass Creek (3912316), Maple Creek (4012377), Mathison Peak (3912336), McWhinney Creek (4012461), Mendocino (3912337), Monterey (3612158), Mt. Carmel (3612147), Myers Flat (4012337), Navarro (3912325), Noyo Hill (3912346), Owl Creek (4012358), Partington Ridge (3612126), Petrolia (4012433), Point Arena (3812386), Point Sur (3612138), Redcrest (4012348), Requa (4112451), Santa Cruz (3612281), Scotia (4012441), Shubrick Peak (4012422), Sister Rocks (4112462), Soberanes Point (3612148), Soquel (3612188), Stewarts Point (3812364), Taylor Peak (4012442), Weott (4012338), Westport (3912367)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Selected References

CNPS Status Review:	CRPR List Addition on 2003-04-04
CNPS Status Review:	CRPR List Change on 2006-06-01