Taxon Details

Sidalcea hickmanii ssp. pillsburiensis

Lake Pillsbury checkerbloom

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Taxon Summary:

Sidalcea hickmanii ssp. pillsburiensis, commonly known as Lake Pillsbury checkerbloom, is a perennial herb in the Malvaceae that is found only in California. It occurs within Chaparral, growing at elevations from 700 to 700 meters. Sidalcea hickmanii ssp. pillsburiensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Sidalcea hickmanii Greene ssp. pillsburiensis S.R. Hill
Common Name: Lake Pillsbury checkerbloom
Family:	Malvaceae
Element Code:	PDMAL110A5
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2T1
State Rank:	S1
Other Status:	USFS_S
CRPR Changes:
Add Date:	2009-02-04
Date Edited:	2024-04-02

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jul-Aug

Elevation:
700 - 700 meters
2295 - 2295 feet

General Habitats:

Chaparral

Microhabitat Details: Franciscan soils

Microhabitat:

Openings

Notes

Notes: Known only from vicinity of Lake Pillsbury. See J. Bot. Res. Inst. Texas 2(2): 783-791 (2008) for original description.
Threats: Potentially threatened by fire line maintenance.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	1
	Total EOs	% of EOs
EOs with Threat Listed:	1	100 %
Other	1	100%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					1
A	B	C	D	X	U
0	0	1	0	0	0

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	1

Presence:
Presumed Extant	1
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Lake (LAK)

Quads: Name (Quad Code)
Lake Pillsbury (3912248)

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