Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Bitterroot Draba - Draba daviesiae
Other Names:  Draba apiculata var. daviesiae

No photos are currently available
If you have a high quality photo of this species, are confident in the identification, and would like to submit it for inclusion on the Montana Field Guide, please send it to us using our online photo submission tool.


Image Copyright and Usage Information
Species of Concern
Native Species

Global Rank: G3
State Rank: S3
(see State Rank Reason below)
State Threat Score: No Known Threats
CCVI: Highly Vulnerable
C-value:


Agency Status
USFWS:
USFS: Sensitive - Known in Forests (BD, BRT)
BLM:


 

External Links

State Rank Reason (see State Rank above)
A Montana endemic, known from several occurrences in alpine areas of the Bitterroot Mountains. Overall abundance and distribution are still poorly known though the high elevation habitat would likely limit most potential impacts.
  • Details on Status Ranking and Review
    Bitterroot Draba (Draba daviesiae) Conservation Status Review
    Review Date = 03/28/2013
    View State Conservation Rank Criteria
    Population Size

    Score2 - Small: Generally 2,000-10,000 individuals.

    Range Extent

    Score3 - Local Endemic or Very Small Montana Range: Generally restricted to an area <10,000 sq. miles (equivalent to the combined area of Phillips and Valley Counties) or <6 Sub-basins (4th code watersheds) Range-wide OR limited to one Sub-basin in Montana

    Area of Occupancy

    Score2 - Low: Generally occurring in 4-10 Subwatersheds (6th Code HUC’s).

    Environmental Specificity

    Score1-2 - Moderate to High.

    Trends

    Score0-1 - Stable to Minor Declines:

    CommentTrends unknown, though populations are likely stable or experiencing only minor declines.

    Threats

    Score0 - Low: Impacts, if any, to the species are expected to be minor or insignificant (affecting <10% of populations) in severity, scope and immediacy.

    CommentHabitat is remote.

    Intrinsic Vulnerability

    Score1 - Moderate Vulnerability: Specific biological attributes, unusual life history characteristics or limited reproductive potential makes the species susceptible to extirpation from stochastic events or other adverse impacts to its habitat and slow to recover.

    Raw Conservation Status Score

    Score 9 to 11 total points scored out of a possible 19.

 
General Description
Mat-forming perennial; the caudex clothed in old leaf bases. Stems simple, 1–5 cm. Basal leaves oblong, 2–5 mm long, entire. Stem leaves lacking. Vestiture of simple leaf cilia; otherwise glabrous. Petals yellow, 3–5 mm long. Fruit ascending, 4–6 mm long, 2–3 mm wide, glabrous; style 0.3–0.5 mm long; lower pedicels 3–6 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).We do not yet have descriptive information on this species.  Please try the buttons above to search for information from other sources.

Phenology
Flowering in July and August, mature fruit in late July and August.

Species Range
Montana Range Range Descriptions

Native
 


Range Comments
Montana endemic, restricted to Bitterroot Mountains in Ravalli County.

Observations in Montana Natural Heritage Program Database
Number of Observations: 24

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Rocky slopes and talus near or above timberline.
Predicted Suitable Habitat Model

This species has a Predicted Suitable Habitat Model available.

To learn how these Models were created see mtnhp.org/models

Ecological Systems Associated with this Species


Threats or Limiting Factors
STATE THREAT SCORE REASON
Threat impact not assigned because threats are not known (MTNHP Threat Assessment 2021).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • MTNHP Threat Assessment. 2021. State Threat Score Assignment and Assessment of Reported Threats from 2006 to 2021 for State-listed Vascular Plants. Botany Program, Montana Natural Heritage Program, Helena, Montana.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lackschewitz, K. 1986. Plants of west-central Montana, identification and ecology: annotated checklist. General Technical Report INT-217. U.S.D.A. Forest Service, Intermountain Research Station, Ogden, Utah. 128 pp.
    • Lackschewitz, K. 1991. Vascular plants of west-central Montana--identification guidebook. U.S. Forest Service Intermountain Research Station, Ogden, UT. 648 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
    • Rollins, R. C. 1984. Studies in the Cruciferae of western North America II. Contributions Gray Herbarium 214:1-18.
    • Rollins, R. C. 1993. The Cruciferae of Continental North America: systematics of the mustard family from the Arctic to Panama. Stanford University Press, Stanford, California. 976 pp.
  • Web Search Engines for Articles on "Bitterroot Draba"
Login Logout

Take us with you! PDF icon

Look for this PDF icon as you search and browse.  Click it to build a custom PDF with species shown on that page or for all the species within that taxonomic level.  To create your own list of species, use the PDF Creator tool at the bottom of the Advanced Search page.

Here's some links if you want to download a whole group.

Mammals
Birds
Reptiles
Amphibians
Fish
Invertebrates
Butterflies / Moths
Dragonflies / Damselflies
Ferns and allies
Conifers
Flowering Plants (Dicots)
Flowering Plants (Monocots)
Bryophytes
Lichens
Ecological Systems
Noxious Weeds
Citation for data on this website:
Bitterroot Draba — Draba daviesiae.  Montana Field Guide.  .  Retrieved on , from