Draba brachystylis

Rydb.

Wasatch Draba

G1Critically Imperiled (G1G2) Found in 1 roadless area NatureServe Explorer →
G1Critically ImperiledGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.150738
Element CodePDBRA110K0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderCapparales
FamilyBrassicaceae
GenusDraba
Other Common Names
Short-style Draba (EN) shortstyle draba (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.
Taxonomic Comments
The taxon represented here includes what Al-Shehbaz and Windham (2007) split out, based on chromosome and morphologic evidence, and call Draba santaquinensis; in other words, this is the lumped view of D. brachystylis.
Conservation Status
Review Date2011-08-25
Change Date1993-09-27
Edition Date1993-09-27
Edition AuthorsStoner, N. (1993); Rev. C. Annable, rev. K. Maybury/B. Franklin (1996), rev. A. Tomaino (2009), rev. L. Oliver (2011)
Range Extent5000-200,000 square km (about 2000-80,000 square miles)
Number of Occurrences1 - 20
Rank Reasons
Known from a few scattered locations in the Wasatch, San Pitch, and Uinta Mountains of Utah and the Spring Mountains of Nevada. This species is uncommon and poorly known. It is a riparian species, and occurs in a couple of National Forests where increased recreation use is a threat. In addition, development in canyons where the species occurs is also a threat. Information about population demographics and trends appears to be unknown.
Range Extent Comments
Utah in the Wasatch, San Pitch, and Uinta Mountains (Holmgren et al. 2005; Welsh et al. 2008) [Cache, Duchesne, Juab, Salt Lake and Utah counites]. Disjunct in the Spring Mountains of southern Nevada (Holmgren et al. 2005). Nevada plants have shorter styles and may possibly be an unnamed species (Holmgren et al. 2005).
Threat Impact Comments
May be threatened by continuing development in the canyons of the central Wasatch Mountains (Franklin 2005). Increased recreation use in the National Forests where this species occurs in both Utah and Nevada, is a threat. In Nevada, in the Humboldt-Toiyabe National Forest it was evident in 2006 that hikers had created a trail in an area where no hiking trail previously existed, and occurring near this species (NatureServe Element Occurence data 2011).
Ecology & Habitat

Diagnostic Characteristics

Flowers later and tends to grow somewhat higher elevation than the related Draba santaquinensis, and has shorter styles and anthers as well as abaxial basal leaf trichomes and smaller seeds but more seeds per fruit.

Habitat

Moist to damp soils with rocks, in rock pockets, or along banks. In Utah, found at 1675-2290 m in aspen (Populus tremuloides) and white fir-Douglas fir (Abies concolor-Pseudotsuga menziesii) communities (Welsh et al. 1993). In Nevada, found above 2130 m in places where snowslides have occurred.
Terrestrial Habitats
Forest/WoodlandForest - HardwoodForest - ConiferBare rock/talus/scree
Palustrine Habitats
FORESTED WETLANDRiparian
Other Nations (1)
United StatesN1
ProvinceRankNative
UtahS2Yes
NevadaS1Yes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentUnknownUnknownUnknown
6 - Human intrusions & disturbanceUnknownUnknownModerate (short-term)
6.1 - Recreational activitiesUnknownUnknownModerate (short-term)

Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
Utah (1)
AreaForestAcres
Little West Fork BlacksWasatch-Cache National Forest8,209
References (8)
  1. Al-Shehbaz, I.A., and M. D. Windham. 2007. New or noteworthy North American <i>Draba</i> (Brassicaceae). Harvard Papers in Botany 12(2): 409-419.
  2. Franklin, M.A. 2005. Plant information compiled by the Utah Natural Heritage Program: A progress report. Publication Number 05-40. Utah Division of Wildlife Resources, Salt Lake City, Utah. 341 pp. [http://dwrcdc.nr.utah.gov/ucdc/ViewReports/plantrpt.htm]
  3. Holmgren, N.H., P.K. Holmgren, and A. Cronquist. 2005. Intermountain flora. Volume 2, part B. Subclass Dilleniidae. The New York Botanical Garden Press. 488 pages.
  4. Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 pp.
  5. 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.
  6. 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.
  7. Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins (eds.) 1993. A Utah flora. 2nd edition. Brigham Young Univ., Provo, Utah. 986 pp.
  8. Welsh, S.L., N.D. Atwood, S. Goodrich and L.C. Higgins. (Eds.) 2008. A Utah Flora. 4th edition, revised. Brigham Young University, Provo, Utah, U.S.A. 1019 pp.