Cirsium ownbeyi - Welsh
Ownbey's Thistle
Other Common Names: Ownbey's thistle
Taxonomic Status: Accepted
Related ITIS Name(s): Cirsium ownbeyi S.L. Welsh (TSN 501549)
Unique Identifier: ELEMENT_GLOBAL.2.149014
Element Code: PDAST2E3A0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Cirsium
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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: Cirsium ownbeyi
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 10Dec1997
Global Status Last Changed: 09Apr1993
Rounded Global Status: G3 - Vulnerable
Reasons: Cirsium ownbeyi occurs across a very restricted range as a regional endemic to Colorado, Utah, and Wyoming. It is known from nearly 30 extant occurrences, with over 25,000 individuals, many on habitat that is somewhat self-protected. However, increased visitor use at the Dinosaur National Monument, where it occurs, poses a threat. The plant does seem to be adapted to natural surface disturbances.
Nation: United States
National Status: N3

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 Colorado (S2), Utah (S1), Wyoming (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Cirsium ownbeyi is a regional endemic of northeast Utah, southwest Wyoming, and northwest Colorado.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: One occurrence in Wyoming, 7 current records from the 1980's and one from 1955 in Dagget, Uinta, and Millard Counties, Utah. 18 occurrences in Colorado which are all records from the 1980's.

Population Size Comments: Well over 25,000 individuals known from the Colorado populations alone.

Overall Threat Impact Comments: Usually occurs in inaccessible habitat unsuitable for other uses. Two occurrences in Dinosaur National Monument record bighorn sheep and landslides in the area, however, the plant is adapted to natural disturbances to its substrate. Aquatic communities associated with Cirsium ownbeyi could be easily damaged by increased visitor use.

Short-term Trend Comments: Unknown.

Intrinsic Vulnerability Comments: Plant seems to occur in areas that are naturally prone to major disturbances.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Cirsium ownbeyi is a regional endemic of northeast Utah, southwest Wyoming, and northwest Colorado.

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 CO, UT, WY

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CO Moffat (08081), Rio Blanco (08103)*
UT Daggett (49009), Uintah (49047)
WY Sweetwater (56037)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
14 Bitter (14040105)+, Upper Green-Flaming Gorge Reservoir (14040106)+, Lower Yampa (14050002)+, Lower White (14050007)+*, Lower Green-Diamond (14060001)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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General Description: Taprooted perennial, 3-7 dm tall. Stems are lightly pubescent, spiny winged along internodes. Leaves are strongly decurrent, green, glabrous, thrice-compound into spiny, finely divided lobes. Upper-most leaves are reduced to spines. Involucre 1.8-2.5 cm high, bracts lightly pubescent on margins only, spine-tipped. Flower heads at tip of stem, not densely clustered, but hidden in a mass of spines. Flowers white to rose pink or lavender (Spackman et al. 1997, Weber and Wittmann 2012, Ackerfield 2015).
Duration: PERENNIAL
Habitat Comments: Juniper, sagebrush, and riparian communities. Usually on limestone, talus, or sandy slopes. Weber and Morgan formations.
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: 20May1993
NatureServe Conservation Status Factors Author: KETTLER, S.M.;Fayette, K., rev. D. Gries

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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  • Ackerfield, J. 2015. Flora of Colorado. Botanical Research Institute of Texas, Fort Worth, TX. 818 pp.

  • Amidon, Barbara. 1994. Special status plant species in the Rock Springs District, BLM. Memo updated 9-30-94.

  • Andersen, M.D. and B. Heidel. 2011. HUC-based species range maps. Prepared by Wyoming Natural Diversity Database for use in the pilot WISDOM application operational from inception to yet-to-be-determined date of update of tool.

  • Atwood, D. et al. 1991. Utah Threatened, Endangered, and Sensitive Plant Field Guide. US Forest Service Region 4, National Park Service, Bureau of Land Management, Utah Natural Heritage Program, US Fish & Wildlife Service, EPA Region 8, Navajo Natural Heritage Program, Skull Valley Goshute Tribe.

  • Colorado Native Plant Society. 1989. Rare Plants of Colorado. Rocky Mountain Nature Association, Colorado Native Plant Society, Estes Park, Colorado.

  • Colorado Native Plant Society. 1989. Rare plants of Colorado. Rocky Mountain Nature Association, Colorado Native Plant Society, Estes Park, Colorado. 73 pp.

  • Colorado Native Plant Society. 1997. Rare Plants of Colorado, second edition. Falcon Press Publ., Helena, MT.

  • Colorado Natural Heritage Program and the Geospatial Centroid. 2017. The Colorado Ownership and Protection Map (COMaP). Colorado State University, Ft. Collins, CO.
     

  • Cronquist, A., A. H. Holmgren, N. H. Holmgren, J. L. Reveal, P. K. Holmgren. 1994. Intermountain Flora Vascular Plants of the Intermountain West, USA: Vol. 5. New York Botanical Garden, Bronx, NY.

  • Cronquist, A., A. H. Holmgren, N. H. Holmgren, J. L. Reveal, and P. K. Holmgren. 1994. Intermountain flora: Vasculr plants of the Intermountain West, U.S.A., Volume 5. Published for The New York Botanical Garden, Bronx, New York.

  • Dorn, R. D. 1992. Vascular Plants of Wyoming, second edition. Mountain West Publishing, Cheyenne, WY.

  • Dorn, R. D. 2001. Vascular Plants of Wyoming, third edition. Mountain West Publishing, Cheyenne, WY.

  • Fertig, W. 2000. State Species Abstract: Cirsium ownbeyi. Wyoming Natural Diversity Database. Available on the internet at www.uwyo.edu/wyndd.

  • Fertig, W. 1999. Status report on Ownbey's thistle (Cirsium ownbeyi) in southwest Wyoming. Unpublished report prepared for the Bureau of Land Management Wyoming State Office by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fertig, W. and R. Thurston. 2003. Modeling the potential distribution of BLM Sensitive and USFWS Threatened and Endangered plant species in Wyoming. Unpublished report prepared for the Bureau of Land Management Wyoming State Office by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fertig, W., C. Refsdal, and J. Whipple. 1994. Wyoming Rare Plant Field Guide. Wyoming Rare Plant Technical Committee, Cheyenne, WY.

  • Fertig, W., L. Welp, and S. Markow. 1998. The status of rare plants in southwest Wyoming. Unpublished report prepared for the Bureau of Land Management by the Wyoming Natural Diversity Database, Laramie, WY.

  • Fletcher, R., B. Isaacs, P. Knight, W. Martin, D. Sabo, R. Spellenberg, and T. Todsen. 1984. A Handbook of Rare and Endemic Plants of New Mexico. University of New Mexico Press, Alburquerque, NM.

  • Flora of North America Editorial Committee. 2006a. Flora of North America North of Mexico. Vol. 19. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York. xxiv + 579 pp.

  • Grant, T. 2002. CPC National Collection Plant Profile: Cirsium ownbey. Posted by the Center for Plant Conservation - National Collection of Endangered Plants, at: http://www.centerforplantconversation.org/

  • Hartman, R. L. and C. H. Refsdal. 1995. Status report on the general floristic inventory of southwest Wyoming and adjacent northeast Utah. Unpublished report prepared for the Bureau of Land Management Wyoming State Office, U.S. Fish and Wildlife Service, and Region 4, U.S. Forest Service, by the Rocky Mountain Herbarium, University of Wyoming, Laramie, WY.

  • 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.

  • Keil, D. J. 2006. Cirsium. Flora of North America Editorial Committee, eds. In: Flora of North America North of Mexico. Vol. 19. Magnoliophyta: Asteridae (in part): Asteraceae part 1. Oxford University Press, New York, NY. pp. 95-164.

  • Naumann, T.S. 1990. Final Report: Inventory of plant species of special concern and the general flora of Dinosaur National Monument 1987-1989. Unpublished report submitted to National Park Service, Denver, CO. Colorado Natural Areas Program, Denver, CO.

  • Nitschke-Sinclear, J. 1987. Memorandum: FY87 progress report on T&E (plant) species management in the Diamond Mountain Resource Area. BLM, Vernal District, Diamond Mountain Resource Area. Dated: September 28, 1987. 2pp.

  • Nitschke-Sinclear, J. 1989. Report on the Special Status Plant Inventory conducted on the Diamond Mountain Resource Area, 1989. Bureau of Land Management, Vernal District, Diamond Mountain Resource Area. 12 pp. [UNHP copy missing pg. 2].

  • O'Kane, S. L. 1988. Colorado's Rare Flora. Great Basin Naturalist. 48(4):434-484.

  • O'Kane, S.L. 1986. Plant species of special concern for the State of Colorado. Unpublished report.

  • O'Kane, S.L. 1988. Colorado's rare flora. Great Basin Naturalist 48 (4):434-484.

  • Refsdal, C. H. 1996. A general floristic inventory of southwest Wyoming and adjacent northeast Utah -- 1994, 1995. Prepared for USDI Bureau of Land Management, Wyoming State Office and Vernal District Office; USDI Fish and Wildlife Service, Wyoming Field Office; USDA Forest Service Region 4 Office; and Rocky Mountain Herbarium, University of Wyoming. 309 pp.

  • Refsdal, C. H. 1996. A general floristic inventory of southwest Wyoming and adjacent northeast Utah, 1994-1995. Unpublished report prepared for the Bureau of Land Management Wyoming State Office, Bureau of Land Management Vernal Supervisor's Office, U.S. Fish and Wildlife Service, and U.S. Forest Service Region 4 by the Rocky Mountain Herbarium, University of Wyoming, Laramie, WY.

  • Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, and C. Spurrier. 1997. Colorado Rare Plant Field Guide. Prepared for the Bureau of Land Management, the U.S. Forest Service and the U.S. Fish & Wildlife Service by the Colorado Natural Heritage Program, Fort Collins, CO.

  • Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, and C. Spurrier. 1997. Colorado rare plant field guide. Prepared for Bureau of Land Management, U.S. Forest Service and U.S. Fish and Wildlife Service by Colorado Natural Heritage Program.

  • USDA, Natural Resources Conservation Service, PLANTS Database [USDA PLANTS]. http://plants.usda.gov/. Accessed 2017.

  • Ward, B. A. 1998. A floristic survey of south-central Wyoming. Masters Thesis. Department of Botany, University of Wyoming, Laramie, WY.

  • Weber, W. A. and R. C. Wittmann. 2012. Colorado Flora, Western Slope, A Field Guide to the Vascular Plants, Fourth Edition. Boulder, Colorado. 532 pp.

  • Weber, W.A., and R.C. Wittmann. 2012b. Colorado Flora, Western Slope, a field guide to the vascular plants, fourth edition. Boulder, Colorado. 532 pp.

  • Welsh, S. L. 1982. New taxa of thistles (Cirsium; Asteraceae) in Utah. Great Basin Naturalist 42(2): 199-202.

  • Welsh, S. L. 1982. New taxa of thistles (Cirsium; Asteraceae) in Utah. Western North American Naturalist 42:199-202.

  • Welsh, S. L., N. D. Atwood, S. Goodrich, and L. C. Higgins [eds]. 1993. A Utah Flora (2nd ed., revised). Provo, UT: Brigham Young University. 986 pp.

  • Welsh, S.L. 1982. New taxa of thistles (Cirsium, Asteraceae) in Utah. Great Basin Naturalist. 42:199-202.

  • Welsh, S.L., N.D. Atwood, L.C. Higgins and S. Goodrich. 1987. Utah Flora, Great Basin Naturalist Memoirs, No. 9. Brigham Young University, Provo, Utah. 986 pp.

  • 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.

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