Lesquerella lesicii - Rollins
Pryor Mountains Bladderpod
Synonym(s): Physaria lesicii (Rollins) O'Kane & Al-Shehbaz
Taxonomic Status: Accepted
Related ITIS Name(s): Lesquerella lesicii Rollins (TSN 507702)
Unique Identifier: ELEMENT_GLOBAL.2.151201
Element Code: PDBRA1N240
Informal Taxonomy: Plants, Vascular - Flowering Plants - Mustard Family
 
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. 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: Lesquerella lesicii
Taxonomic Comments: Closely related to L. fremontii. Published by Reed C. Rollins in NOVON 5: 71-75, 1995.
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 11Feb2011
Global Status Last Changed: 28Nov2011
Rounded Global Status: G2 - Imperiled
Reasons: Lesica's bladderpod occurs only in Montana, where it is restricted to a few areas of limestone outcrops in the eastern Pryor Mountains. While it occurs largely on steep terrain that is relatively inaccessible to humans, dense trailing by wild horses has negatively impacted habitat for the largest population. Overall, threats to this species are considered moderate; quantitative population trends are unknown.
Nation: United States
National Status: N2

U.S. & Canada State/Province Status
United States Montana (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to the Pryor Mountains, Carbon County, Montana (Rollins 1995).

Number of Occurrences: 1 - 5
Number of Occurrences Comments: There are 3 occurrences.

Population Size Comments: There is an estimated total of 20,000 to 100,000 individuals, but known occupied habitat is about 400 acres.

Overall Threat Impact Comments: Habitat is potentially affected by wild horses.

Short-term Trend: Decline of 10-30%
Short-term Trend Comments: Terraces created by wild horse trailing are thought to have reduced part of a population.

Long-term Trend: Unknown

Intrinsic Vulnerability Comments: While the habitat seems fairly resilient, the species is in a narrow, exposed zone affected by the balance between succession and natural disturbance..

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to the Pryor Mountains, Carbon County, Montana (Rollins 1995).

U.S. States and Canadian Provinces
Color legend for Distribution Map

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

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
MT Carbon (30009)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
10 Big Horn Lake (10080010)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A delicate perennial herb with silvery, erect basal leaves and a very slender, nearly leafless flowering stem, 1-1.5 dm long. Flower petals are yellow, sometimes pale purple at the tips.
General Description: Lesica's Bladderpod is a short-lived perennial with a few, unbranched, prostrate to ascending stems that arise from an unbranched rootcrown and taproot. The basal leaves have petioles that are 1-3 cm long and spade-shaped blades that are shorter than the petiole with entire margins. The alternate stem leaves are much smaller, broadly lance-shaped, and without petioles. The foliage is sparsely covered with sessile, star-shaped hairs. Yellow, stalked flowers are borne at the tops of the stems in a narrow inflorescence that elongates as the fruit matures. Each flower has 4 separate petals, 4 separate sepals, and 4 long and 2 short stamens. The globose capsules, or siliques, have a short style on top and are borne on reflexed stalks.
Diagnostic Characteristics: The globose, unlobed siliques borne on reflexed stalks when mature separate this plant from species of PHYSARIA and LESQUERELLA in our area, except for L. LUDOVICIANA, which has narrowly elliptic to lance-shaped leaf blades. A hand lens is necessary for identification.
Duration: PERENNIAL, Short-lived
Terrestrial Habitat(s): Barrens, Forest - Conifer, Forest/Woodland, Savanna, Shrubland/chaparral, Woodland - Conifer
Habitat Comments: Slopes and ridges on stony, limestone derived soil, 1920 - 2250 m. Reported from barren ground or in open areas in sparse stands of low-growing trees and shrubs. Collections report Douglas fir forest and the edge of a limber pine woodland (Rollins 1995).
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: 25Jul1996
NatureServe Conservation Status Factors Author: Beckman, J. (7/96), rev. Maybury (1997), rev. S. Mincemoyer (2007)
Element Ecology & Life History Edition Date: 02Nov1994
Element Ecology & Life History Author(s): JM

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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  • Al-Shehbaz, I. A., and S. L. O'Kane. 2002. Lesquerella is united with Physaria (Brassicaceae). Novon 12:319-329.

  • 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.

  • Greenlee, J. T. and R. M. Callaway. 1996. Abiotic stress and the relative importance of interference and facilitation in montane bunchgrass communities in western Montana. American Naturalist 148:386-396.

  • 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.

  • Lesica, P. 1995. Conservation status of LESQUERELLA LESICII in Montana. Unpublished report to the U.S. Forest Service and the Bureau of Land Management. Montana Natural Heritage Program. 16 pp. plus appendices.

  • Lesica, P. 1995c. Conservation status of Lesquerella lesicii in Montana. Unpublished report to the U.S. Forest Service and the Bureau of Land Management. Montana Natural Heritage Program. 16 pp. plus appendices.

  • Rollins, R. C. 1995. Two LESQUERELLAs (Cruciferae) of south central and western Montana. Novon 5(1):71-75.

  • Rollins, R.C. 1995. Two Lesquerellas (Cruciferae) of south central and western Montana. Novon 5(1): 71-75.

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