Hexastylis contracta - Blomquist
Southern Heartleaf
Other English Common Names: Mountain Heartleaf
Other Common Names: mountain heartleaf
Synonym(s): Asarum contractum (Blomquist) Barringer
Taxonomic Status: Accepted
Related ITIS Name(s): Hexastylis contracta Blomquist (TSN 502984)
Unique Identifier: ELEMENT_GLOBAL.2.154830
Element Code: PDARI03020
Informal Taxonomy: Plants, Vascular - Flowering Plants - Birthwort Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Aristolochiales Aristolochiaceae Hexastylis
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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: Hexastylis contracta
Taxonomic Comments: Although synonymized by Cronquist, considered distinct by most botanists in the region.
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 11Jan2018
Global Status Last Changed: 15Mar1984
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G3 - Vulnerable
Reasons: Hexastylis contracta is nearly endemic to the Cumberland Plateau of Tennessee and Kentucky, with a few disjunct populations in the Blue Ridge of North Carolina. It is most common in Tennessee, becoming more rare in Kentucky and North Carolina.,
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 Kentucky (S1), North Carolina (S1), Tennessee (S3), Virginia (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to the Cumberland Plateau of Tennessee and Kentucky, with a few disjunct populations in the Blue Ridge of North Carolina (Weakley, 1996).

Area of Occupancy: 26-125 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 21 - 80
Number of Occurrences Comments: As of 2017, there are seven occurrences in Kentucky,  8 to 10 occurrences in North Carolina, and 1 in Virginia. As of 1984, at least 30 occurrences in Tennessee (Bridges, Tennessee Element Ranking Form, Feb. 7, 1984). 

Number of Occurrences with Good Viability/Integrity: Few (4-12)

Overall Threat Impact: Unknown
Overall Threat Impact Comments: Somewhat threatened by land-use conversion, habitat fragmentation, and forest management practices (most known sites are private) (Southern Appalachian Species Viability Project 2002).

Short-term Trend: Decline of <30% to relatively stable
Short-term Trend Comments: Several sites are historic. 

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to the Cumberland Plateau of Tennessee and Kentucky, with a few disjunct populations in the Blue Ridge of North Carolina (Weakley, 1996).

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 KY, NC, TN, VA

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
KY Laurel (21125), Letcher (21133)*, McCreary (21147), Whitley (21235)
NC Buncombe (37021), Caldwell (37027), Henderson (37089)
VA Washington (51191)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
03 Upper Yadkin (03040101)+, Upper Catawba (03050101)+, Upper Broad (03050105)+
05 Upper Cumberland (05130101)+, South Fork Cumberland (05130104)+
06 North Fork Holston (06010101)+, Upper French Broad (06010105)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Habitat Comments: On acidic soils in deciduous forests with Kalmia latifolia and Rhododendron maximum.
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: 11Jan2018
NatureServe Conservation Status Factors Author: rev. D. Gries (1997), rev. Treher (2018)

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
  • Flora of North America Editorial Committee. 1997. Flora of North America north of Mexico. Vol. 3. Magnoliophyta: Magnoliidae and Hamamelidae. Oxford Univ. Press, New York. xxiii + 590 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.

  • 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.

  • Weakley, A.S. 1996. Flora of the Carolinas and Virginia: working draft of 23 May 1996. The Nature Conservancy, Southeast Regional Office, Southern Conservation Science Dept., Chapel Hill, North Carolina. Unpaginated.

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