Polygonum americanum

ClassificationDicots
FamilyPolygonaceae
Family (Traditional)Polygonaceae
GenusPolygonum
Species:Polygonum americanum (Fisch. & C. A. Mey.) T. M. Schust. & Reveal
Common NameSouthern Jointweed
Growth Habitshrub
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: Yes; Woody Herbaceous: Woody; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: shrub; Region of Origin: North America; Reproductive Phenology: September; Reproductive Phenology: October; Reproductive Phenology: November; Leaf Arrangement: alternate; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Type: broadleaf; Leaf Type: linear; Leaf Venation: one-veined; Leaflet Margins: entire; Leaflet Number: 0; Base Flower Color: White; Fruit Dehiscence: No; Fruit Type: Achene; Fruit Wet/Dry: Dry; Hypanthium Present: No; Inflorescence Types: raceme; Ovary Position: Superior; Overall Flower Symmetry: Actinomorphic; Perianth Present: Yes; Placentation Type: Basal; Sexuality: monoclinous; Sporangium Arrangement: N/A
C value
StatusNative
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Currently no photos are available for this plant.

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: Knox (TN), Morgan (TN)

Herbaria represented by specimen data listed below: APSC, UTM

Range of years during which specimens were collected: 2008 - 2008

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used
UTM01173 Knox Tennessee
UTM
Polygonum americanum
APSC0112741 Morgan Tennessee 21 Sep 2008 Dwayne Estes
 APSC
Polygonum americanum
APSC0112763 Morgan Tennessee 21 Sep 2008 Dwayne Estes
 APSC
Polygonum americanum
APSC0112756 Morgan Tennessee
APSC
Polygonum americanum
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