Eupatorium semiserratum

ClassificationDicots
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusEupatorium
Species:Eupatorium semiserratum DC.
Common NameSmallflower Thoroughwort
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: BE; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Mesic-Hydric; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: August; Reproductive Phenology: September; Leaf Arrangement: alternate; Leaf Arrangement: opposite; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Petiole Type: subsessile; Leaf Type: broadleaf; Leaflet Margins: serrate; Leaflet Number: 0; Anther Type: Basifixed; Base Flower Color: White; Carpel Number/Pistil: 1; Fruit Complexity: Simple; Fruit Dehiscence: No; Fruit Type: Cypsela; Fruit Wet/Dry: Dry; Hypanthium Present: No; Inflorescence Position: terminal; Inflorescence Types: corymb/cyme/umbel; Inflorescence Types: head; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Ovules per Carpel: 1; Perianth Present: Yes; Petal Fusion: Yes; Petal Number: 5; Pistil Complexity: Simple; Pistil Number: 1; Placentation Type: Basal; Sepal Fusion: N/A; Sepal Number: N/A; Sexuality: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Number: N/A
C value 5
StatusNative; AGCP (FACW), EMP (FACW) (NWPL); TN[SNR] KY[S1?] (State Rank); G5 (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

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  • State Boundaries
  • Counties
  • Counties - Species Present
Ecoregions
  • Southeastern Plains
    • Blackland Prarie
  • Blue Ridge Mountains
  • Ridge and Valley
  • Cumberland Plateau
  • Cumberland Mountains
  • Allegheny Plateau
  • Interior Plateau
    • Bluegrass Region
    • Nashville Basin
    • Pennyroyal Karst Plain
    • Western Highland Rim
    • Eastern Highland Rim

Synonyms (1)

SynonymFull Citation
Eupatorium ambiguum Eupatorium ambiguum Hook.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Whitley (KY), Chester (TN), Coffee (TN), Fayette (TN), Franklin (TN), Hardeman (TN), Hardin (TN), Moore (TN), Polk (TN), Warren (TN)

Herbaria represented by specimen data listed below: APSC, EKY, TENN, UCHT, UOS, VDB

Range of years during which specimens were collected: 1984 - 2019

Accession No. (click for full details)
County
State
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
TENN-V-0212045 Chester Tennessee
TENN
Eupatorium semiserratum
APSC0074783 Coffee Tennessee 02 Sep 1984 Max Medley
APSC
Eupatorium semiserratum
31234100257813 Coffee Tennessee 25 Aug 1992 Henry R. DeSelm
EKY
Eupatorium semiserratum
APSC0068480 Coffee Tennessee 18 Sep 1996 R. Kral with M. Russo, D. Kennemore
86759
APSC
Eupatorium semiserratum
UOS00873 Coffee Tennessee 18 Sep 1996 Douglas E. Kennemore, Jr.
UOS
Eupatorium semiserratum
TENN-V-0212046 Coffee Tennessee
TENN
Eupatorium semiserratum
TENN-V-0212054 Coffee Tennessee
TENN
Eupatorium semiserratum
TENN-V-0212049 Coffee Tennessee
TENN
Eupatorium semiserratum
TENN-V-0212053 Coffee Tennessee
TENN
Eupatorium semiserratum
TENN-V-0212051 Coffee Tennessee
TENN
Eupatorium semiserratum
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Plant Photos

Eupatorium semiserratum - Dwayne Estes
Eupatorium semiserratum - Dwayne Estes
Eupatorium semiserratum - Dwayne Estes
Eupatorium semiserratum - Dwayne Estes
Eupatorium semiserratum - Dwayne Estes
Eupatorium semiserratum - Dwayne Estes
Eupatorium semiserratum - Theo Witsell
Eupatorium semiserratum - Theo Witsell
Eupatorium semiserratum - Theo Witsell
Eupatorium semiserratum - Theo Witsell