Desmodium obtusum

ClassificationDicots
FamilyFabaceae
Family (Traditional)Fabaceae
GenusDesmodium
Species:Desmodium obtusum (Muhl. ex Willd.) DC.
Common NameStiff Ticktrefoil
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: Yes; Woody Herbaceous: Herbaceous; Natural Area Presence: BE; Natural Area Presence: NRG; Natural Area Presence: SGSNA; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; Region of Origin: North America; Reproductive Phenology: April; Reproductive Phenology: May; Reproductive Phenology: June; Leaf Arrangement: alternate; Leaf Complexity: compound; Leaf Dissection: 1; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Type: broadleaf; Leaf Venation: ternate; Leaflet Margins: entire; Leaflet Number: 3; Base Flower Color: Purple; Carpel Number/Pistil: 1; Fruit Complexity: Simple; Fruit Dehiscence: No; Fruit Type: Schizocarp; Fruit Wet/Dry: Dry; Hypanthium Present: Yes; Ovary Position: Superior; Overall Flower Symmetry: Zygomorphic; Ovules per Carpel: 1; Ovules per Carpel: 2; Ovules per Carpel: 3; Ovules per Carpel: 4; Perianth Present: Yes; Petal Fusion: Yes; Petal Number: 5; Pistil Complexity: Simple; Pistil Number: 1; Placentation Type: Parietal; Sepal Number: 5; Sexuality: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 10
C value 6
StatusNative; TN[SNR] KY[SNR] (State Rank); G4G5 (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.

  • 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

No synonyms exist for this species.

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: Cumberland (KY), Hardin (KY), Blount (TN), Carroll (TN), Carter (TN), Chester (TN), Claiborne (TN), Cocke (TN), Cumberland (TN), Davidson (TN), Dickson (TN), Fentress (TN), Franklin (TN), Henry (TN), Humphreys (TN), Marion (TN), Montgomery (TN), Roane (TN), Rutherford (TN), Unicoi (TN), Van Buren (TN)

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

Range of years during which specimens were collected: 1982 - 2015

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100426806 Cumberland Kentucky 21 Sep 1997 Carrie L. Tilton
144
EKY
Desmodium obtusum
N/A Carter Tennessee 29 Aug 2015 Frosty Levy
ETSU
Desmodium obtusum
TENN-V-0129008 Franklin Tennessee
TENN
Desmodium obtusum
TENN-V-0129005 Davidson Tennessee
TENN
Desmodium obtusum
TENN-V-0129010 Roane Tennessee
TENN
Desmodium obtusum
TENN-V-0129003 Claiborne Tennessee
TENN
Desmodium obtusum
TENN-V-0129002 Carroll Tennessee
TENN
Desmodium obtusum
TENN-V-0129007 Fentress Tennessee
TENN
Desmodium obtusum
TENN-V-0129011 Rutherford Tennessee
TENN
Desmodium obtusum
16972 Carroll Tennessee
BOON
Desmodium obtusum
APSC0102344 Hardin Kentucky
APSC
Desmodium obtusum
APSC0017954 Henry Tennessee
APSC
Desmodium obtusum
APSC0017953 Montgomery Tennessee 03 Sep 1982 Edward Chester
APSC
Desmodium obtusum
ETSU030851 Cocke Tennessee
ETSU
Desmodium obtusum
UCHT043108 Chester Tennessee
UCHT
Desmodium obtusum
N/A Unicoi Tennessee 20 Sep 2014 Frosty Levy
ETSU
Desmodium obtusum
TENN-V-0129004 Cumberland Tennessee
TENN
Desmodium obtusum
TENN-V-0129012 Van Buren Tennessee
TENN
Desmodium obtusum
TENN-V-0129001 Blount Tennessee
TENN
Desmodium obtusum
TENN-V-0129006 Dickson Tennessee
TENN
Desmodium obtusum
TENN-V-0129009 Henry Tennessee
TENN
Desmodium obtusum
UCHT017171 Marion Tennessee
UCHT
Desmodium obtusum
APSC0092237 Humphreys Tennessee
APSC
Desmodium obtusum
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Plant Photos

Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes
Desmodium obtusum - Dwayne Estes