Home/Species/ Pedate Checker-mallow

Sidalcea pedata

Gray

Pedate Checker-mallow

G1Critically Imperiled Found in 2 roadless areas NatureServe Explorer →

G1Critically ImperiledGlobal Rank

HighThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.151180

Element CodePDMAL110L0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderMalvales

FamilyMalvaceae

GenusSidalcea

Other Common Names

birdfoot checkerbloom (EN) Birdfoot Checkerbloom (EN)

Concept Reference

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Conservation Status

Review Date2015-10-28

Change Date1984-06-26

Edition Date2003-08-05

Edition AuthorsD. Gries, rev. R. Bittman (7/98). rev. M. Fellows (8/03)

Threat ImpactHigh

Range Extent<100-250 square km (less than about 40-100 square miles)

Number of Occurrences6 - 20

Rank Reasons

Endemic to California, Sidalcea pedata is known from approximately ten extant occurrences in the Big Bear Basin in San Bernardino County. Its habitat of wet meadows has been reduced by 85% over the last hundred years. Development remains a serious threat to this taxon, in addition to grazing, vehicle activity, and other threats. It is protected in part at Baldwin Lake Ecological Reserve and at Eagle Point.

Range Extent Comments

California endemic, occurs in the Big Bear Basin of San Bernardino County, California.

Occurrences Comments

Known from ten recent occurrences (seen during the last 20 years) and four historical.

Threat Impact Comments

Habitat loss and degradation has been and continues to be the most significant threat to this taxon. In the 1890's, the primary habitat for this taxon was destroyed by the creation of Big Bear Lake. The taxon now occupies the margins of its former range, in areas suited for development. Only 6 of the 17 occurrences have any protection from development. Its most serious threats are development, grazing, and vehicle traffic. Other threats include flood control development, land grading, herbicide spraying, building of an airplane hangar, water skiing, and trampling (Bittman 1998).

Ecology & Habitat

Habitat

Loamy clay of annually-moist pebble plain meadows, and occasionally in dry meadows at 1600-2500 m (Pearson, 1989).

Terrestrial Habitats

Grassland/herbaceous

Other Nations (1)

United StatesN1

Province	Rank	Native
California	S1	Yes

Threat Assessments

Threat	Scope	Severity	Timing
1 - Residential & commercial development	Large - restricted	Extreme - serious	High - moderate
2 - Agriculture & aquaculture	Large - restricted	Extreme - serious	High - moderate
2.3 - Livestock farming & ranching	Large - restricted	Extreme - serious	High (continuing)
4 - Transportation & service corridors	Large - restricted	Extreme - serious	High (continuing)
4.1 - Roads & railroads	Large - restricted	Extreme - serious	High (continuing)
6 - Human intrusions & disturbance	Large - restricted	Extreme - serious	High (continuing)
6.1 - Recreational activities	Large - restricted	Extreme - serious	High (continuing)
7 - Natural system modifications	Large - restricted	Extreme - serious	High - low
7.2 - Dams & water management/use	Large - restricted	Extreme - serious	High - low
9 - Pollution	Large - restricted	Extreme - serious	High (continuing)

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (2)

California (2)

Area	Forest	Acres
Granite Peak	San Bernardino National Forest	450
Sugarloaf	San Bernardino National Forest	8,206

References (5)

Bittman, R. 1998. Lead Botanist, California Natural Diversity Database. Unpublished notes on fifty rare plants of California for purposes of updating Element Global Ranking (EGR) forms. California Natural Heritage Division, Dep. of Fish & Game, Sacramento, California, U.S.A.
Flora of North America Editorial Committee (FNA). 2015. Flora of North America north of Mexico. Vol. 6. Magnoliophyta: Cucurbitaceae to Droserceae. Oxford University Press, New York. 496 pp + xxiv.
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Pearson, D.C. 1989. Endangered species alert program manual: Species accounts and procedures. Southern California Edison Environmental Affairs Division.
Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.

Sidalcea pedata

Habitat

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