Lesquerella stonensis - Rollins
Stones River Bladderpod
Synonym(s): Paysonia stonensis (Rollins) OKane & Al-Shehbaz
Taxonomic Status: Accepted
Related ITIS Name(s): Lesquerella stonensis Rollins (TSN 23228) ;Paysonia stonensis (Rollins) O'Kane & Al-Shehbaz (TSN 823067)
Unique Identifier: ELEMENT_GLOBAL.2.153263
Element Code: PDBRA1N1K0
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. 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 stonensis
Conservation Status
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NatureServe Status

Global Status: G1
Global Status Last Reviewed: 30Sep1997
Global Status Last Changed: 02Mar1998
Rounded Global Status: G1 - Critically Imperiled
Reasons: Known only from Rutherford County, Tennessee, where it inhabits the floodplains of the Stones River and some of its tributaries. The species is only established and persistent at 2 locations, but about 20 occurrences have been recorded, many quite large in some years. A Cooperative Management Agreement among the Fish and Wildlife Service, the Tennessee Wildlife Resources Agency, Tennessee Department of Environment and Conservation, and the U.S. Army Corps of Engineers outlines appropriate agricultural management techniques that will provide the disturbance required for the species the complete its life cycle. The U.S. Fish and Wildlife Service believes that this Agreement secures into the foreseeable future the fourteen sites where the species occurs on public conservation lands many quite large in some years. Additionally, the Tennessee Department of Environment and Conservation will continue to work with the owners of the six privately owned sites to gain appropriate management for these sites and to obtain long-term protection for them.
Nation: United States
National Status: N1

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 Tennessee (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Known only in the floodplain of the Stones River in Rutherford County, Tennessee (Fish and Wildlife Service 1999).

Number of Occurrences: 1 - 5
Number of Occurrences Comments: Known from three populations divided among twenty sites (Fish and Wildlife Service 1999).

Short-term Trend: Relatively Stable (<=10% change)
Short-term Trend Comments: A Cooperative Management Agreement among the Fish and Wildlife Service, the Tennessee Wildlife Resources Agency, Tennessee Department of Environment and Conservation, and the U.S. Army Corps of Engineers outlines appropriate agricultural management techniques that will provide the disturbance required for the species the complete its life cycle. The U.S. Fish and Wildlife Service believes that this Agreement secures into the foreseeable future the fourteen sites where the species occurs on public conservation lands (Fish and Wildlife Service 1999).

Other NatureServe Conservation Status Information

Distribution
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Global Range: Known only in the floodplain of the Stones River in Rutherford County, Tennessee (Fish and Wildlife Service 1999).

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 TN

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
TN Rutherford (47149)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
05 Stones (05130203)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A slender, erect, annual herb with stems, 1-1.5 dm tall, radiating from the base. Leaves are hairy, grayish-green. Flowers are white (or pale lavender), cross-shaped, with 4 spatula-shaped petals. Blooms in spring. Fruit is oval-shaped, densely hairy.
General Description: Plant a slender, erect annual mustard whose slender stems radiate from the base, 10-15 cm tall. Leaves hairy, grayish- green, simple and alternate on the stem. Flowers white (or pale lavender), cross-shaped, each having 4 spatula-shaped petals 0.75-2 cm long, petals with a narrow yellow spot at base. Inflorescences are racemes. Fruit is an obovoid capsule, 4-6 mm long x 4 mm wide, 2-celled, with 2-6 round, flattened seeds in each cell.
Technical Description: Plant a slender, erect annual mustard whose slender stems radiate from the base, 10-15 cm tall. LEAVES hairy, grayish- green, simple and alternate on the stem. Stem leaves narrowly oblong to oblanceolate, about 0.75-2 cm long x 0.5-0.75 inch wide, with toothed margins, some or all of the stem leaves with auriculate bases; basal leaves divided, 2-10 cm long, with pointed teeth. Flowers white (or pale lavender), cross-shaped, each having 4 spatula-shaped petals 0.75-2 cm long, petals with a narrow yellow spot at base. Inflorescences are racemes; flowers are borne from short, spreading stalks on the raceme. FRUIT is an obovoid capsule, 4-6 mm long x 4 mm wide, 2-celled, with 2-6 round, flattened seeds in each cell. Each capsule has fine continuous hairs on it, and a persistent style, which is as long as the capsule itself.
Diagnostic Characteristics: This species closely resembles the Proposed Federal Endangered Lesquerella perforata, the Spring Creek bladderpod. Both are winter annual mustards with white flowers. They are best distinguished with mature fruit. The fruit of L. stonensis is densely hairy on the outside, as is the attached style. L. stonensis, on the other hand, bears fruit which is smooth to very sparsely hairy on the outside, with a hairless style attached. The plants are most easily observed in early Spring (Late February to mid-March) when their white flowers can blanket the fields. By mid- April, other flowers (notably Corn-salad, Valerianella spp.) begin to bloom as the bladderpods decline, making it harder to see the bladderpods.
Palustrine Habitat(s): HERBACEOUS WETLAND, Riparian
Terrestrial Habitat(s): Bare rock/talus/scree, Cropland/hedgerow, Grassland/herbaceous
Habitat Comments: Floodplains, mainly where new exposures of alluvium have been created by recent flooding or cultivation. Tends to occur in areas of full sun on well-drained soils, as well as (rarely) on limestone outcrops.
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: 30Sep1997
NatureServe Conservation Status Factors Author: Pyne, M. & K. Maybury (1996), rev. L. Morse (1997), rev. D. Gries (1999)

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
  • Fish and Wildlife Service. 1999. Endangered and threatened wildlife and plants; Notice of reclassification of Lesquerella stonensis (Stones River bladderpod). Federal Register 64(90):25216.

  • 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.

  • Kral, R. 1980. Lesquerella stonensis. In A.F. Robinson, Jr. (ed.). Endangered and threatened species of the southeastern U.S. including Puerto Rico and the Virgin Islands. U.S. Forest Service, General Report SA-GA7, Atlanta, GA.

  • Kral, R. 1983a. A report on some rare, threatened or endangered forest related vascular plants of the south. USFS technical publication R8-TP2, Atlanta, GA. Vol. 1: 718 pp.

  • O'Kane, S. L. and I. A. Al-Shehbaz. 2002. Paysonia a new genus segregated from Lesquerella (Brassicaeae). Novon 12:379-381.

  • O'Kane, Steve L. , Jr. and Ihsan A. Al-Shehbaz Paysonia, a New Genus Segregated from Lesquerella (Brassicaceae) Novon, Vol. 12, No. 3 (Autumn, 2002), pp. 379-381

  • Pyne, M., M. Gay, and A. Shea. 1995. Guide to rare plants - Tennessee Division of Forestry District 5. Tennessee Dept. Agriculture, Division of Forestry, Nashville.

  • 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.

  • Rollins, R.C., and E.A. Shaw. 1973. The genus Lesquerella (Cruciferae) in North America. Harvard Univ. Press. Cambridge, MA. 288 pp.

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