Home/Species/ Parish's Rockcress

Boechera parishii

(S. Wats.) Al-Shehbaz

Parish's Rockcress

G2Imperiled Found in 3 roadless areas NatureServe Explorer →

G2ImperiledGlobal Rank

Very highThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.158312

Element CodePDBRA061C0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderCapparales

FamilyBrassicaceae

GenusBoechera

Synonyms

Arabis parishiiS. Wats.

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.

Taxonomic Comments

Treated by FNA (2010, vol. 7) in the genus Boechera.

Conservation Status

Rank MethodLegacy Rank calculation - Excel v3.1x

Review Date2013-05-15

Change Date1988-03-08

Edition Date2013-05-15

Edition AuthorsBittman, R.L., rev. D. Gries, rev. L. Oliver (2003), rev. A. Treher (2013)

Threat ImpactVery high

Range Extent250-1000 square km (about 100-400 square miles)

Number of Occurrences6 - 20

Rank Reasons

Endemic to the San Bernardino Mountains of California, Arabis parishii is known from over forty extant occurrences across a limited range. Vehicle activity, carbonate mining, grazing and road construction are the biggest threats to this species.

Range Extent Comments

Limited to the San Bernardino Mountains, San Bernardino County in the Bear Valley and Holcomb Valley areas, California at 5800-9950 ft. elevation. Area of the minimum convex polygon, range extent, is 480 sq km.

Occurrences Comments

Forty-four EOs (13 historic and 1 extirpated) (CNDDB 2013).

Threat Impact Comments

Most sites seriously threatened by urbanization, off-the-road vehicle activity, non-native species (including Cheat Grass and Burros), and carbonate mining (CNDDB 2013 and CNPS 2001). Other threats that exist at one or more occurrence(s) are road maintenance, illegal woodcutting, recreational activities (trampling, foot traffic, and equestrian activities), and dumping in the area (CNDDB 2013).

Ecology & Habitat

Habitat

Pinyon and juniper woodlands, upper montane coniferous forest, alluvial soils, mostly on pebble plains (quartzite pebbles on clay).

Terrestrial Habitats

Forest/WoodlandForest - ConiferWoodland - ConiferBarrens

Other Nations (1)

United StatesN2

Province	Rank	Native
California	S2	Yes

Threat Assessments

Threat	Scope	Severity	Timing
1 - Residential & commercial development	Small (1-10%)	Extreme - moderate	High (continuing)
2 - Agriculture & aquaculture	Small (1-10%)	Unknown	High (continuing)
2.3 - Livestock farming & ranching	Small (1-10%)	Unknown	High (continuing)
3 - Energy production & mining	Restricted (11-30%)	Extreme - moderate	High (continuing)
3.2 - Mining & quarrying	Restricted (11-30%)	Extreme - moderate	High (continuing)
4 - Transportation & service corridors	Small (1-10%)	Serious - slight	High (continuing)
4.1 - Roads & railroads	Small (1-10%)	Serious - slight	High (continuing)
5 - Biological resource use	Negligible (<1%)	Unknown	Unknown
5.3 - Logging & wood harvesting	Negligible (<1%)	Unknown	Unknown
6 - Human intrusions & disturbance	Restricted (11-30%)	Serious - slight	High (continuing)
6.1 - Recreational activities	Restricted (11-30%)	Serious - slight	High (continuing)
8 - Invasive & other problematic species, genes & diseases	Restricted (11-30%)	Unknown	High (continuing)
8.1 - Invasive non-native/alien species/diseases	Restricted (11-30%)	Unknown	High (continuing)
9 - Pollution	Negligible (<1%)	Unknown	Unknown
9.4 - Garbage & solid waste	Negligible (<1%)	Unknown	Unknown

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (3)

California (3)

Area	Forest	Acres
Granite Peak	San Bernardino National Forest	450
Heartbreak Ridge	San Bernardino National Forest	4,455
Sugarloaf	San Bernardino National Forest	8,206

References (6)

Bachman, S., J. Moat, A.W. Hill, J. de la Torre, and B. Scott. Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool. In: Smith, V., and L. Penev (Eds). 2011. e-Infrastructures for data publishing in biodiversity science. ZooKeys 150:117-126. Version BETA. Accessed online: http://geocat.kew.org/editor
California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
California Natural Diversity Database (CNDDB). 2013. RareFind Version 4. California Department of Fish and Game, Sacramento.
Flora of North America Editorial Committee (FNA). 2010. Flora of North America north of Mexico. Vol. 7. Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. xxii + 797 pp.
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.
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.

Boechera parishii

Habitat

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