Thalictrum coriaceum - (Britt.) Small
Leatherleaf Meadowrue
Other English Common Names: Maid-of-the-mist
Other Common Names: maid-of-the-mist
Taxonomic Status: Accepted
Related ITIS Name(s): Thalictrum coriaceum (Britt.) Small (TSN 18666)
Unique Identifier: ELEMENT_GLOBAL.2.131903
Element Code: PDRAN0M050
Informal Taxonomy: Plants, Vascular - Flowering Plants - Buttercup Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Ranunculales Ranunculaceae Thalictrum
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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: Thalictrum coriaceum
Taxonomic Comments: Thalictrum steeleanum was formerly distinguished from T. coriaceum, but a recent study under Carl Keener by Marilyn Park of Penn. State Univ. has shown that the reported differences do not hold up, and plants fitting either description can be found growing together, especially in rich, moist soil (such as along the Potomac River from Great Falls to Georgetown). LEM 9Nov94.
Conservation Status
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NatureServe Status

Global Status: G4
Global Status Last Reviewed: 28Mar1994
Global Status Last Changed: 16Mar1984
Rounded Global Status: G4 - Apparently Secure
Reasons: Occasional through eastern portion of southern Appalachians, perhaps clonal at some or all outlying sites.
Nation: United States
National Status: N4

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 District of Columbia (SNR), Georgia (S1?), Kentucky (S4?), Maryland (S4), North Carolina (S2S3), Pennsylvania (S2), South Carolina (SNR), Tennessee (S1), Virginia (S4), West Virginia (S4)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to the central Appalachians, primarily the Blue Ridge and the Ridge and Valley, and also along banks of Shenandoah and Potomac Rivers. Range extends from Pennsylvania south to North Carolina and Tennessee, and perhaps into Georgia.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: Occasional within the range, sometimes locally frequent.

Population Size Comments: Scarce at each site, typically 5-100 stems, perhaps a single clone each.

Overall Threat Impact Comments: Thalictrum coriaceum is infrequent throughout its range; land-use conversion and fragmentation and forest management practices are threats to this species which requires pristine undisturbed habitats (Southern Appalachian Species Viability Project 2002).

Short-term Trend: Relatively Stable (<=10% change)

Intrinsic Vulnerability Comments: Grows in openings in forested slopes, so subject to decline if mosaic of openings not maintained through floods, etc.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to the central Appalachians, primarily the Blue Ridge and the Ridge and Valley, and also along banks of Shenandoah and Potomac Rivers. Range extends from Pennsylvania south to North Carolina and Tennessee, and perhaps into Georgia.

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 DC, GA, KY, MD, NC, PA, SC, TN, VA, WV

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
GA Union (13291)
PA Bedford (42009), Blair (42013), Fayette (42051), Franklin (42055)*, Huntingdon (42061), Indiana (42063), Lancaster (42071)*, Somerset (42111)*, Westmoreland (42129)
TN Blount (47009), Campbell (47013), Carter (47019), Claiborne (47025), Fentress (47049)*, Greene (47059), Morgan (47129), Scott (47151)*, Sevier (47155), Unicoi (47171)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
02 Upper Juniata (02050302)+, Raystown (02050303)+, Lower Juniata (02050304)+, Lower Susquehanna (02050306)+*, North Branch Potomac (02070002)+*, Cacapon-Town (02070003)+, Conococheague-Opequon (02070004)+*
05 Conemaugh (05010007)+, Youghiogheny (05020006)+, South Fork Cumberland (05130104)+
06 Watauga (06010103)+, Lower French Broad (06010107)+, Nolichucky (06010108)+, Watts Bar Lake (06010201)+, Upper Clinch (06010205)+, Powell (06010206)+, Emory (06010208)+, Hiwassee (06020002)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Habitat Comments: Moist, alluvial thickets and woods, mainly on the Piedmont along major rivers (Potomac, Susquehanna), also on drier ridge crests in the Blue Ridge and Ridge and Valley regions of the Appalachians.
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: 09Nov1994
NatureServe Conservation Status Factors Author: Morse, L.E. (1984), rev. L. Morse (1994)

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
  • 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.

  • PARK, M.M. 1988. THE TAXONOMIC STATUS OF THE THALICTRUM CORIACEUM COMPLEX. A PROJECT REPORT TO THE NATURE CONSERVANCY.

  • Southern Appalachian Species Viability Project. 2002. A partnership between the U.S. Forest Service-Region 8, Natural Heritage Programs in the Southeast, NatureServe, and independent scientists to develop and review data on 1300+ regionally and locally rare species in the Southern Appalachian and Alabama region. Database (Access 97) provided to the U.S. Forest Service by NatureServe, Durham, North Carolina.

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