Cirsium muticum

ClassificationDicots
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusCirsium
Species:Cirsium muticum Michx.
Common NameSwamp Thistle
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: Yes; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: GILES; Natural Area Presence: GRSM; Natural Area Presence: SGSNA; Duration: Biennial; General Ecology: Mudflat; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Mesic; Moisture Requirements: Mesic-Hydric; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Leaf Arrangement: alternate; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Dissection: 0.5; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Petiole Type: sessile; Leaf Type: broadleaf; Leaf Type: thistle-like; Leaf Venation: pinnate; Leaflet Margins: lobed; Leaflet Number: 0; Anther Type: Basifixed; Base Flower Color: Purple; 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 10
StatusNative; AGCP (OBL), EMP (OBL) (NWPL); TN[SNR] KY[S4S5] (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.

Leaflet | Powered by Esri | Esri, HERE, Garmin, FAO, NOAA, USGS, EPA, NPS
  • 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 (6)

SynonymFull Citation
Carduus muticus Carduus muticus Pers.
Cirsium bigelovii Cirsium bigelovii
Cirsium muticum var. monticola Cirsium muticum var. monticola (Fernald) Fernald
Cirsium muticum var. subpinnatifidum Cirsium muticum var. subpinnatifidum Fernald
Cnicus muticus Cnicus muticus
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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: Floyd (KY), Harlan (KY), Jackson (KY), Lee (KY), McCreary (KY), Menifee (KY), Pike (KY), Powell (KY), Blount (TN), Carter (TN), Cheatham (TN), Cocke (TN), Coffee (TN), Dickson (TN), Fentress (TN), Giles (TN), Grundy (TN), Johnson (TN), Lewis (TN), Maury (TN), Polk (TN), Rutherford (TN), Warren (TN), Williamson (TN), Wilson (TN)

Herbaria represented by specimen data listed below: APSC, EKY, ETSU, MTSU, TENN, UCHT

Range of years during which specimens were collected: 1897 - 2016

Accession No. (click for full details)
County
State
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
TENN-V-0237593 Blount Tennessee
TENN
Cirsium muticum
ETSU034054 Carter Tennessee
ETSU
Cirsium muticum
APSC0032876 Cheatham Tennessee
APSC
Cirsium muticum
N/A Cocke Tennessee 11 Sep 1897 Thos H. Kearney
794
UCHT
Cirsium muticum
TENN-V-0237594 Cocke Tennessee
TENN
Cirsium muticum
APSC0068905 Coffee Tennessee
APSC
Cirsium muticum
TENN-V-0237595 Dickson Tennessee
TENN
Cirsium muticum
TENN-V-0237596 Fentress Tennessee
TENN
Cirsium muticum
TENN-V-0237735 Floyd Kentucky
TENN
Cirsium muticum
TENN-V-0237597 Giles Tennessee
TENN
Cirsium muticum
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Plant Photos

Cirsium muticum - Dwayne Estes
Cirsium muticum - Dwayne Estes
Cirsium muticum - Dwayne Estes
Cirsium muticum - Dwayne Estes
Cirsium muticum - Sunny Fleming
Cirsium muticum - Sunny Fleming