Home/Species/ Jaeger's Whitlow-grass

Draba jaegeri

Munz & Johnston

Jaeger's Whitlow-grass

G2Imperiled Found in 3 roadless areas NatureServe Explorer →

G2ImperiledGlobal Rank

UnknownThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.128553

Element CodePDBRA11190

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderCapparales

FamilyBrassicaceae

GenusDraba

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

Rank Method Rank calculation - Biotics v2

Review Date2021-10-28

Change Date1990-09-05

Edition Date2021-10-28

Edition AuthorsKnight, Teri (1988), rev. J. Nachlinger (1997), rev. Treher (2021)

Threat ImpactUnknown

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

Number of Occurrences6 - 20

Rank Reasons

Draba jaegeri is a tiny perennial alpine herb that is endemic to the Spring Mountains of Nevada in the western United States. There are 12-14 occurrences within a small range extent (56 sq. km). Threats to the species include recreational activities that may damage plants and the habitat and climate change which may cause habitat shifts, including habitat succession. More surveys are needed to document population sizes and additional information on threats. Ongoing monitoring will provide the opportunity to detect changes in habitat associated with climate change.

Range Extent Comments

Draba jaegeri occurs in the western United States in Nevada where it is endemic to the Spring Mountains of Clark County. Range extent was calculated using NatureServe Network and iNaturalist data (iNaturalist 2021, NatureServe 2021).

Threat Impact Comments

This species is threatened by recreational activities, primarily trampling, as they fragile, small plants. Given the alpine habitat of the species, climate change is likely a threat.

Ecology & Habitat

Habitat

This species occurs in rock crevices, among broken rocks, and in gravelly limestone soils in alpine and subalpine woodlands, but occasionally lower in mixed conifer forests. It is found at elevations of 2,550 to 3,580 meters.

Terrestrial Habitats

Forest/WoodlandForest - ConiferWoodland - ConiferAlpineBare rock/talus/scree

Other Nations (1)

United StatesN2

Province	Rank	Native
Nevada	S2	Yes

Threat Assessments

Threat	Scope	Severity	Timing
6 - Human intrusions & disturbance	Unknown	Unknown	High (continuing)
6.1 - Recreational activities	Unknown	Unknown	High (continuing)
11 - Climate change & severe weather	Pervasive (71-100%)	Unknown	High (continuing)
11.1 - Habitat shifting & alteration	Pervasive (71-100%)	Unknown	High (continuing)

Plant Characteristics

DurationPERENNIAL

Economic Value (Genus)No

Roadless Areas (3)

Nevada (3)

Area	Forest	Acres
Angel Peak North	Humboldt-Toiyabe National Forest	12,577
Charleston - Carpenter	Humboldt-Toiyabe National Forest	17,828
Charleston - Macks Cyn	Humboldt-Toiyabe National Forest	11,378

References (7)

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. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 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.
Morefield, J.D., editor. 2001. Nevada rare plant atlas [with rare plant fact sheets]. Available as a pdf file at: http://heritage.nv.gov/atlas/atlas.html. Compiled by the Nevada Natural Heritage Program, Carson City, for the U.S. Fish and Wildlife Service, Reno, Nevada.
Mozingo, H.N., and M. Williams. 1980. The threatened and endangered plants of Nevada. U.S. Fish and Wildlife Service and Bureau of Land Management, Portland, OR. 268 pp.
Rollins, R.C. 1993a. The Cruciferae of continental North America: Systematics of the mustard family from the Arctic to Panama. Stanford Univ. Press, Stanford, California. 976 pp.
Weixelman, D., and D. Atwood. 1990. Toiyabe National Forest sensitive plants field guide. U.S. Forest Service, Intermountain Region, Ogden, UT. 123 pp.

Draba jaegeri

Habitat

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