Lesquerella parviflora - Rollins
Piceance Bladderpod
Synonym(s): Physaria parviflora (Rollins) O'Kane & Al-Shehbaz
Taxonomic Status: Accepted
Related ITIS Name(s): Lesquerella parviflora Rollins (TSN 503413)
Unique Identifier: ELEMENT_GLOBAL.2.160720
Element Code: PDBRA1N1S0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Mustard Family
Image 12100

Public Domain

 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Capparales Brassicaceae Lesquerella
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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: Lesquerella parviflora
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 19May2008
Global Status Last Changed: 19May2008
Rounded Global Status: G2 - Imperiled
Reasons: Endemic to the shale barrens of northwestern Colorado. While there are 27 occurrences, many are of poor-fair viability or historical. Very few occurrences appear to be specifically protected and the potential for oil shale and natural gas development poses a significant threat.
Nation: United States
National Status: N2

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)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Colorado endemic known from Rio Blanco, Garfield, and Mesa Counties. Estimated range is 4,165 square kilometers (1,611 square miles), calculated in GIS by drawing a minimum convex polygon around the known occurrences.

Area of Occupancy: 6-25 4-km2 grid cells
Area of Occupancy Comments: The total occupied habitat is about 1194 acres. Occurrences without specific information on occupied habitat were considered to occupy 0.5 acre.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: There are 27 principal occurrences documented in the Colorado Natural Heritage Program database. Sixteen of the 27 occurrences have not been observed in over 20 years.

Population Size Comments: Total estimated sum of individuals from 23 of the 29 documented occurrences is 238,205. The remaining occurrences do not report the number of individuals.

Number of Occurrences with Good Viability/Integrity: Few (4-12)
Viability/Integrity Comments: There are 8 occurrences with an A or B rank.

Overall Threat Impact: Very high - high
Overall Threat Impact Comments: Oil shale mining and oil and gas development are the primary threats. Off road vehicles, overgrazing and urban development are also potential threats.

Short-term Trend: Relatively Stable (<=10% change)
Short-term Trend Comments: The trends are unknown for this species but the occurrences seem to be viable.

Long-term Trend: Unknown
Long-term Trend Comments: Unknown.

Intrinsic Vulnerability Comments: Specialized soil requirements.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Colorado endemic known from Rio Blanco, Garfield, and Mesa Counties. Estimated range is 4,165 square kilometers (1,611 square miles), calculated in GIS by drawing a minimum convex polygon around the known occurrences.

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

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CO Garfield (08045), Mesa (08077), Rio Blanco (08103)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
14 Colorado headwaters-Plateau (14010005)+, Upper White (14050005)+*, Piceance-Yellow (14050006)+, Lower White (14050007)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A silvery-gray perennial herb that has several nearly prostrate stems, 1-3 dm long, and bears yellow flowers in June and July.
Technical Description: Annual or short-lived perennial herb with decumbent stems from low growing rosettes. Basal leaves flat and dentate to angular, covered in stellate hair giving a silver appearance. Golden yellow flowers are born on secund racemes; pendant siliques formed .
Terrestrial Habitat(s): Forest/Woodland, Woodland - Conifer
Habitat Comments: Endemic to outcrops of the Green River Shale Formation in the Piceance Basin. It grows on ledges and slopes of canyons in open areas of pinon juniper communities. The soils are Torriorthent Rock outcrop complex (Peterson and Baker 1982). Frequently associated species include Pinus edulis, Juniperus osteosperma, Eriogonum sp., Cirsium sp., Astragalus lutosus, Cercocarpus sp., Galium coloradense, Oryzopsis hymenoides, Penstemon sp., and Machaeranthera sp.
Economic Attributes
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Economically Important Genus: Y
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: 14Jan2013
NatureServe Conservation Status Factors Author: JM Burt, rev. Maybury/Spackman (1996), rev. Neuhaus, K., J. Handwerk, and S. Spackman Panjabi (2006); Smith, P. (2013)
Element Ecology & Life History Edition Date: 07Mar2008
Element Ecology & Life History Author(s): Lyon, P.

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
Help
  • Ackerfield, J. 2012. The Flora of Colorado. Colorado State University Herbarium. 433 pp.


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

  • Elliott, B. A., S. Spackman Panjabi, B. Kurzel, B. Neely, R. Rondeau, M. Ewing. 2009. Recommended Best Management Practices for Plants of Concern. Practices developed to reduce the impacts of oil and gas development activities to plants of concern. Unpublished report prepared by the Rare Plant Conservation Initiative for the National Fish and Wildlife Foundation.

  • Flora of North America Editorial Committee. 2010. Flora of North America North of Mexico. Vol. 7. Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. xxii + 797 pp.

  • 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.

  • 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.

  • Neely, B., S. Panjabi, E. Lane, P. Lewis, C. Dawson, A. Kratz, B. Kurzel, T. Hogan, J. Handwerk, S. Krishnan, J. Neale, and N. Ripley. 2009. Colorado Rare Plant Conservation Strategy, Developed by the Colorado Rare Plant conservation Initiative. The Nature Conservancy, Boulder, Colorado, 117 pp.

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

  • Rollins, R. C. 1983. Studies in the Cruciferae of Western North America. Journal of the Arnold Arboretum 64 (4).

  • 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.

  • Rondeau, R., K. Decker, J. Handwerk, J. Siemers, L. Grunau, and C. Pague. 2011. The state of Colorado's biodiversity 2011. Prepared for The Nature Conservancy. Colorado Natural Heritage Program, Colorado State University, Fort Collins, Colorado.

  • Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, C. Spurrier, and T. Skadelandl. 1996. Colorado rare plant field guide. Prepared for the Bureau of Land Management, the U.S. Forest Service, and the U.S. Fish and Wildlife Service by the Colorado Natural Heritage Program, Fort Collins.

  • Spackman, et al. 1996. Colorado Rare Plant Field Guide, in Press.

  • USDA, NRCS. 2013. The PLANTS Database. National Plant Data Team, Greensboro, NC 27401-4901 USA.

  • Weber, W. A. and R. C. Wittmann. 2012. Colorado Flora, Eastern Slope, A Field Guide to the Vascular Plants, Fourth Edition. Boulder, Colorado. 555 pp.

  • 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.

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