Roadless Areas
Home/Species/ Few-seeded Whitlow-grass

Draba oligosperma

Hook.

Few-seeded Whitlow-grass

G5Secure Found in 37 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
LowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.1285708
Element CodePDBRA11490
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderCapparales
FamilyBrassicaceae
GenusDraba
Concept Reference
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.
Taxonomic Comments
This record is for Draba oligosperma as recognized in FNA (2010, vol. 7), which excludes D. pectinipila as a distinct species that includes D. juniperina Dorn as "indistinguishable from the type collections of the earlier-published D. pectinipila." Kartesz (1994) treated D. pectinipila as distinct, but included D. juniperina in D. oligosperma. Kartesz (1999) included D. pectinipila and D. juniperina in D. oligosperma.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2023-09-06
Change Date2023-09-06
Edition Date2023-09-06
Edition AuthorsNordman, C. (2023).
Threat ImpactLow
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Draba oligosperma is known from western and northern North America, from mountainous areas and from tundra in the far north, it occurs in western Canada and western United States, the range extent is estimated to be 5.3 million square kilometers, and there are over 500 occurrences rangewide, including from many National Forests and from BLM lands in the western United States, and from various National Parks in the United States and Canada.
Range Extent Comments
Draba oligosperma is known from western and northern North America, from mountainous areas and from tundra in the far north, it occurs in western Canada (Alberta, British Columbia, Northwest Territories, Yukon Territory, and Nunavut) and western United States (Alaska, California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Washington and Wyoming). Range extent was estimated to be 5.3 million square kilometers using herbarium specimens and photo-based observations documented between 1992 and 2023 (Flora of North America Editorial Committee 2010, GBIF 2023, iNaturalist 2023, SEINet 2023).
Occurrences Comments
Based on herbarium records, and photo-based observations documented between 1992 and 2023, there are over 500 occurrences rangewide (GBIF 2023, iNaturalist 2023, SEINet 2023).
Threat Impact Comments
Draba oligosperma may be threatened by recreation activities in parts of its range, such as in popular alpine areas of Colorado.
Ecology & Habitat

Habitat

Draba oligosperma occurs on rock outcrops, talus, gravel benches, and in the far north in tundra, at 200-3900 m in elevation, but up to 4267 m in Colorado alpine habitat (Ackerfield 2015, Flora of North America Editorial Committee 2010).

Reproduction

Flowering from May to July (Flora of North America Editorial Committee 2010).
Terrestrial Habitats
AlpineTundraBare rock/talus/scree
Other Nations (2)
United StatesN5
ProvinceRankNative
ColoradoS3Yes
MontanaS5Yes
WyomingS5Yes
NevadaS3Yes
AlaskaS1Yes
CaliforniaSNRYes
IdahoSNRYes
UtahSNRYes
OregonSNRYes
CanadaN5
ProvinceRankNative
AlbertaS3Yes
NunavutS2Yes
Yukon TerritoryS4Yes
British ColumbiaS5Yes
Northwest TerritoriesS4Yes
Threat Assessments
ThreatScopeSeverityTiming
6 - Human intrusions & disturbanceSmall (1-10%)Moderate - slightHigh (continuing)
6.1 - Recreational activitiesSmall (1-10%)Moderate - slightHigh (continuing)

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (37)
California (10)
AreaForestAcres
Boundary Peak (CA)Inyo National Forest210,884
Coyote NorthInyo National Forest11,932
Coyote SoutheastInyo National Forest53,159
Hall Natural AreaInyo National Forest5,236
Horse Mdw.Inyo National Forest5,687
Long MeadowHumboldt-Toiyabe National Forest11,967
Mt. JacksonHumboldt-Toiyabe National Forest20,721
Rock Creek WestInyo National Forest3,626
Sweetwater (CA)Humboldt-Toiyabe National Forest19,241
Table Mtn.Inyo National Forest4,215
Idaho (1)
AreaForestAcres
Italian PeakCaribou-Targhee National Forest141,158
Montana (5)
AreaForestAcres
Allan Mountain (01946)Bitterroot National Forest104,184
BridgerGallatin National Forest45,059
Italian PeakBeaverhead-Deerlodge National Forest90,401
Line Creek PlateauCuster National Forest24,825
Red Lodge Creek HellroaringCuster National Forest17,210
Nevada (8)
AreaForestAcres
Arc Dome - OphirHumboldt-Toiyabe National Forest5,652
Boundary Peak (NV)Inyo National Forest21,851
Rose - GalenaHumboldt-Toiyabe National Forest3,711
ShellbackHumboldt-Toiyabe National Forest36,455
South SchellHumboldt-Toiyabe National Forest125,614
Table Mtn. - EastHumboldt-Toiyabe National Forest87,789
Toiyabe RangeHumboldt-Toiyabe National Forest99,225
Ward MountainHumboldt-Toiyabe National Forest15,927
Utah (4)
AreaForestAcres
418040Uinta National Forest1,702
High Uintas (UT)Wasatch-Cache National Forest102,398
LakesWasatch-Cache National Forest121,967
Little West Fork BlacksWasatch-Cache National Forest8,209
Washington (1)
AreaForestAcres
ChelanWenatchee National Forest74,650
Wyoming (8)
AreaForestAcres
0401021Ashley National Forest5,152
Beartooth Proposed WildernessShoshone National Forest16,837
Little Sheep MountainBridger-Teton National Forest14,192
Middle ForkShoshone National Forest51,772
Mosquito Lake - Seven LakesBridger-Teton National Forest51,950
Snowy RangeMedicine Bow-Routt National Forest29,660
South Beartooth HighwayShoshone National Forest105,570
West Slope WindsBridger-Teton National Forest143,252
References (7)
  1. Ackerfield, J. 2015. Flora of Colorado. Botanical Research Institute of Texas, Fort Worth, TX. 818 pp.
  2. 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.
  3. Global Biodiversity Information Facility (GBIF). 2023. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2023).
  4. iNaturalist. 2023. Online. Available: https://www.inaturalist.org (accessed 2023).
  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. Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
  7. Southwest Environmental Information Network (SEINet). 2023. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2023).