Eupatorium anomalum - Nash
Florida Thoroughwort
Other Common Names: Florida thoroughwort
Synonym(s): Eupatorium x anomalum Nash
Taxonomic Status: Accepted
Related ITIS Name(s): Eupatorium anomalum Nash (TSN 35983)
Unique Identifier: ELEMENT_GLOBAL.2.154020
Element Code: PDAST3P040
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
Image 12027

Public Domain

 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Eupatorium
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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: Eupatorium anomalum
Taxonomic Comments: This taxon is believed to be a triploid and tetraploid, apomictic form of the hybrid Eupatorium mohrii x serotinum. It is considered a distinct species based on it being morphologically, phenologically separate, as well as exhibiting a distinct distribution (Weakley 2012). Some sources treat this taxon as a hybrid, Eupatorium xanomalum (Wunderlin and Hansen 2011).
Conservation Status
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NatureServe Status

Global Status: G2G3
Global Status Last Reviewed: 08Sep2014
Global Status Last Changed: 01Jul1998
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G2 - Imperiled
Reasons: A regional endemic with sporadic occurrences on the Coastal Plain from North Carolina south to central Florida and west to southern Alabama.
Nation: United States
National Status: NNR

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 Alabama (SNR), Florida (SNR), Georgia (S2?), North Carolina (S1?), South Carolina (S1?), Virginia (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Eupatorium anomalum occurs from southeastern Virginia, south to the peninsula of Florida and west to Alabama (Weakley 2012).

Number of Occurrences: 6 - 20
Number of Occurrences Comments: Seven element occurrences, one is historic (NatureServe Central Database 2014).

Number of Occurrences with Good Viability/Integrity: Unknown

Overall Threat Impact: Unknown

Short-term Trend: Unknown

Long-term Trend: Unknown

Other NatureServe Conservation Status Information

Distribution
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Global Range: Eupatorium anomalum occurs from southeastern Virginia, south to the peninsula of Florida and west to Alabama (Weakley 2012).

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 AL, FL, GA, NC, SC, VA

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
GA Mcintosh (13191)
SC Beaufort (45013), Charleston (45019), Jasper (45053)
VA Accomack (51001), Virginia Beach (City) (51810)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
02 Chincoteague (02040303)+
03 Albemarle (03010205)+, Cooper (03050201)+, Broad-St. Helena (03050208)+, Calibogue Sound-Wright River (03060110)+, Ogeechee Coastal (03060204)+, Altamaha (03070106)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A robust perennial herb, up to 15 dm tall, that produces a flat-topped cluster of white, rayless flower heads from midsummer to fall. Leaves are sharply serrate, oval or lance-shaped.
Palustrine Habitat(s): HERBACEOUS WETLAND
Terrestrial Habitat(s): Savanna
Habitat Comments: Wet, low ground. Moist savannahs.
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: 01Feb1998
NatureServe Conservation Status Factors Author: Maybury, K. & J. Amoroso (1996)

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
  • Clewell, A.F. 1985. Guide to vascular plants of the Florida panhandle. Florida State Univ. Press, Tallahassee, Florida. 605 pp.

  • Cronquist, A. 1980. Vascular flora of the southeastern United States. Vol. 1. Asteraceae. Univ. North Carolina Press, Chapel Hill. 261 pp.

  • Godfrey, R.K., and J.W. Wooten. 1981. Aquatic and wetland plants of southeastern United States: Dicotyledons. Univ. Georgia Press, Athens. 933 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.

  • Small, J.K. 1933. Manual of the southeastern flora. Two volumes. Hafner Publishing Company, New York.

  • Weakley, A. S. 2012. Flora of the Southern and Mid-Atlantic States. Working Draft of 28 September 2012. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina at Chapel Hill. Online. Available: http://herbarium.unc.edu/flora.htm (Accessed 2012).

  • 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.

  • Wunderlin, R.P. and B.F. Hansen. 2011. Guide to the Vascular Plants of Florida, 3rd edition. University Press of Florida, Tampa. 800 pp.

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