Erigeron lackschewitzii - Nesom & W.A. Weber
Front Range Fleabane
Other English Common Names: Lackschewitz's fleabane
Taxonomic Status: Accepted
Related ITIS Name(s): Erigeron lackschewitzii G.L. Nesom & W.A. Weber (TSN 513036)
French Common Names: vergerette de Lackschewitz
Unique Identifier: ELEMENT_GLOBAL.2.158067
Element Code: PDAST3M5W0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Erigeron
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Concept Reference
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Concept Reference: 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.
Concept Reference Code: B99KAR01HQUS
Name Used in Concept Reference: Erigeron lackschewitzii
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 06Feb2018
Global Status Last Changed: 30Jul1999
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G3 - Vulnerable
Reasons: Regional endemic of Montana and adjacent Alberta.  The high elevation habitat has relatively few threats but there is potential for oil and gas exploration.  
Nation: United States
National Status: N3
Nation: Canada
National Status: N1 (20Sep2016)

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 Montana (S3)
Canada Alberta (S1)

Other Statuses

Committee on the Status of Endangered Wildlife in Canada (COSEWIC): Candidate (Low) (26Jan2015)

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to Montana along the the Flint Creek Range north to the Rocky Mountain Front and just into adjacent Alberta (Montana Natural Heritage Program 2018; Nesom 2004).  Most of the range is in Montana.

Area of Occupancy: 6-25 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 21 - 80
Number of Occurrences Comments: In Montana there were 14 reported occurrences as of 1999, and 62 observations as of 2018 (Montana Natural Heritage Program, 1999, 2018). Only one or two occurrences in Alberta (NatureServe Network Database as of November 2017).  

Overall Threat Impact: Medium - low
Overall Threat Impact Comments: Habitat is not prone to human disturbance; however, area is being searched for gas and oil (Heidel 1993).  Trampling is an insignificant threat (Montana Natural Heritage Program 2018).  

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to Montana along the the Flint Creek Range north to the Rocky Mountain Front and just into adjacent Alberta (Montana Natural Heritage Program 2018; Nesom 2004).  Most of the range is in Montana.

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.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States MT
Canada AB

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
MT Flathead (30029), Glacier (30035), Granite (30039), Lewis and Clark (30049), Pondera (30073), Powell (30077), Teton (30099)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
09 St. Marys (09040001)+, Belly (09040002)+
10 Upper Missouri-Dearborn (10030102)+, Sun (10030104)+, Two Medicine (10030201)+, Teton (10030205)+
17 Upper Clark Fork (17010201)+, Flint-Rock (17010202)+, Middle Fork Flathead (17010207)+, South Fork Flathead (17010209)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Taprooted perennial with unbranched stems 3-8 cm high and blue flowers.
General Description: Lackschewitz' Fleabane is a taprooted perennial with a simple or sparingly-branched rootcrown and curved, unbranched stems that are 3-8 cm high. The basal leaves are 2-6 cm long and narrowly spoon-shaped with pointed tips. The 5-10 stem leaves are gradually reduced upwards. Foliage is sparsely to densely covered with long white hairs. The solitary flower heads are 10-15 mm wide, and the involucral bracts are green, 6-8 mm long, and densely covered with long, white hairs and sessile glands. The 30-70 blue rays are 8-11 mm long and notched at the tips. The yellow disk corollas are 3-5 mm long. There are 15-24 pappus bristles at the top of the achenes. Flowering in July-early August, fruiting late July (Montana Natural Heritage Program, 1999).
Diagnostic Characteristics: The taprooted habit, bluish ray flowers, cauline leaves, and densely long-hairy involucre distinguish this species from most other ERIGERON in our area. Treated by some authors under E. OCHROLEUCUS, from which it differs by the conspicuously woolly involucre. Other differences involving basal leaves and crosswalls in the hairs based on description of the latter in the literature do not hold. (Montana Natural Heritage Program, 1999).
Terrestrial Habitat(s): Alpine, Bare rock/talus/scree, Grassland/herbaceous
Habitat Comments: Occurs on rocky slopes and ridges, terraces, talus, and dry meadows, usually calcareous (Nesom 2004; Flora of North America Editorial Committee 2006).  Open, gravelly, calcareous soil and talus on ridgetops in the alpine and subalpine zones (Montana Natural Heritage Program, 1999). In Alberta it is found on Dryas octopetala tundra; subxeric, rapidly drained Orthic Regosol on colluvial veneer over inclined rock; with Senecio ocnterminus and Erigeron compositus (note from Joyce Gould, Alberta Nat. Heritage Info. Ctr, August 11/1999).
Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: Protect and maintain habitat.  Revisit sites to confirm status and low level of threats.  Analyze occurrence data to determine whether some Montana occurrences should be combined.   
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: 06Feb2018
NatureServe Conservation Status Factors Author: Shelly, J.S., and P. Lesica, rev. A. Tomaino (2018)
Management Information Edition Date: 06Feb2018
Management Information Edition Author: Tomaino, A.

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. 2006b. Flora of North America North of Mexico. Vol. 20. Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford Univ. Press, New York. xxii + 666 pp.

  • Heidel, B. L. 1993. Report on the conservation status of ERIGERON LACKSCHEWITZII, a candidate threatened species. Unpublished report to U.S. Fish and Wildlife Service. Montana Natural Heritage Program, Helena, MT. 57 pp.

  • Heidel, B.L. 1993. Report on the conservation status of Erigeron lackschewitzii, a candidate threatened species. Unpublished report to U.S. Fish and Wildlife Service. Montana Natural Heritage Program, Helena, MT. 57 pp.

  • 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.

  • Kershaw, L., J. Gould, D. Johnson, and J. Lancaster. 2001. Rare vascular plants of Alberta. Univ. of Alberta Press, Edmonton, Alberta and Nat. Resour. Can., Can. For. Serv., North. For. Cent., Edmonton, Alberta. 484pp.

  • Kerstetter, T. 1993. Preliminary report on taxonomy of ERIGERON LACKSCHEWITZII. Unpublished report to U.S. Fish and Wildlife Service. Montana Natural Heritage Program, Helena, MT. 12 pp.

  • Kerstetter, T. 1994. Interim report on the taxonomy of ERIGERON LACKSCHEWITZII. Unpublished report to the Montana Natural Heritage Program, Helena, MT. 16 pp.

  • Kerstetter, T. A. 1994. Taxonomic investigation of ERIGERON LACKSCHEWITZII. M.S. thesis. Montana State University, Bozeman, Montana. 90 pp.

  • Kerstetter, T.A. 1993. Preliminary report on taxonomy of Erigeron lackschewitzii. Unpublished report to U.S. Fish and Wildlife Service. Montana Natural Heritage Program, Helena, MT. 12 pp.

  • Montana Natural Heritage Program. 1999. Last updated July 1. Species Information Online. Available at: http://orion2.nris.state.mt.us/mtnhp/plants/index.html

  • Montana Natural Heritage Program. 2018. Montana Field Guide. Online. Available: http://fieldguide.mt.gov (Accessed 2018).

  • Nesom, G. L. and W. A. Weber. 1983. A new woolly-headed, monocephalous ERIGERON (ASTERACEAE) from Montana. Madrono 30:245-249.

  • Nesom, G.L. 2004d. Taxonomic reevaluations in North American Erigeron (Asteraceae: Astereae). Sida 21(1):19-39.

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