Draba maguirei var. maguirei
Maguire's Whitlow-grass
Synonym(s): Draba maguirei sensu stricto C.L. Hitchc.
Taxonomic Status: Accepted
Related ITIS Name(s): Draba maguirei var. maguirei C.L. Hitchc. (TSN 527775)
Unique Identifier: ELEMENT_GLOBAL.2.131988
Element Code: PDBRA111J2
Informal Taxonomy: Plants, Vascular - Flowering Plants - Mustard Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Capparales Brassicaceae Draba
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Concept Reference
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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.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Draba maguirei var. maguirei
Taxonomic Comments: This record follows the treatment of Draba maguirei in the broad sense, including vars. burkei and maguirei as varieties. Populations in the Bear River Range (D. maguirei var. maguirei, or D. maguirei in the strictest sense) have a different chromosome number (n=8, 16) than those from the Wellsville Mountains and the northern Wasatch (n=10), which have been recognized as var. burkei. As a result of this new information, it may be more appropriate to recognize these two varieties as separate species, and a scientific paper formally presenting that proposal will soon appear (D. Stone, 6/97).
Conservation Status
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NatureServe Status

Global Status: G3T2
Global Status Last Reviewed: 25Jun1998
Global Status Last Changed: 27Feb1996
Rounded Global Status: T2 - Imperiled
Reasons: This variety endemic to the Bear River Range in Cache Co., Utah. Seventeen known occurrences. Plants from the northern Wasatch Range (Box Elder, Cache and Weber cos., Utah) now recognized as D. maguirei var. burkei.
Nation: United States
National Status: N2

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Utah (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to the Bear River Range in Cache County, Utah. Plants from the northern Wasatch Mountains in Box Elder, Cache, and Weber counties are D. MAGUIREI var. BURKEI.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to the Bear River Range in Cache County, Utah. Plants from the northern Wasatch Mountains in Box Elder, Cache, and Weber counties are D. MAGUIREI var. BURKEI.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
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U.S. & Canada State/Province Distribution
United States UT

Range Map
No map available.

Ecology & Life History
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Basic Description: Dicot, Brassicaceae. Low, tufted perennial with trailing caudex branches; leaves in basal rosettes, +/- uniformly pubescent with fine, short-stalked, mostly 4-rayed hairs; flowers yellow; siliques glabrous or rarely with very short, fine pubescence like the leaves; styles 1-2.5 mm long.
Habitat Comments: Crevices of rock outcrops or shallow, rocky soils in the vicinity of rock outcrops. Restricted to carbonate substrates. Elevation range of known occurrences is from 5500-9600 feet. Lower-elevation sites ar typically in openings of Douglas-fir forest on north- or east-facing slopes.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 01Aug1995
NatureServe Conservation Status Factors Author: Doug Stone

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
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  • Flora of North America Editorial Committee. 2010. Flora of North America North of Mexico. Vol. 7. Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. xxii + 797 pp.

  • Hitchcock, C. L. 1941. A revision of the drabas of western North America. University of Washington Publications in Biology. 11: 1-107.

  • Kartesz, J. T., and C. Meacham. 1998d. Unpublished review draft of Floristic Synthesis, 30 Sept 1998. North Carolina Botanical Garden, Chapel Hill, NC.

  • 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.

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