Polygonum buxiforme

Family (Traditional)Polygonaceae
Species:Polygonum buxiforme Small
Common NameBox Knotweed
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: Yes; Woody Herbaceous: Herbaceous; Duration: Annual; General Ecology: Terrestrial; Growth Habit: forb; Region of Origin: North America; Reproductive Phenology: June; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: alternate; Leaf Complexity: simple; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaflet Number: 0; Base Flower Color: White; Fruit Dehiscence: No; Fruit Type: Achene; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Superior; Overall Flower Symmetry: Actinomorphic; Perianth Present: Yes; Pistil Number: 1; Placentation Type: Basal; Sexuality: monoclinous; Sporangium Arrangement: N/A
C value 2
StatusNative; TN[SNR] KY[SU] (State Rank); G5 (Global Rank)
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
  • 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


SynonymFull Citation
Polygonum aviculare subsp. buxiforme Polygonum aviculare subsp. buxiforme (Small) Costea & Tardif
Polygonum aviculare var. buxiforme Polygonum aviculare var. buxiforme (Small) Costea & Tardif
Polygonum aviculare var. littorale Polygonum aviculare var. littorale (Link) Mert.
Polygonum buxiforme Polygonum buxiforme Small
Polygonum littorale Polygonum littorale Link

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: Bracken (KY), Bullitt (KY), Campbell (KY), Fayette (KY), Fleming (KY), Lyon (KY), Trigg (KY), Stewart (TN)

Herbaria represented by specimen data listed below: APSC, KNK, TENN

Range of years during which specimens were collected: 1984 - 2003

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31973000015158 Bracken Kentucky
Polygonum buxiforme
31973000015157 Campbell Kentucky
Polygonum buxiforme
TENN-V-0088430 Fayette Kentucky
Polygonum buxiforme
APSC0007562 Trigg Kentucky 23 Aug 1984 Edward Chester
Polygonum buxiforme
APSC0093520 Bullitt Kentucky
Polygonum buxiforme
APSC0007553 Stewart Tennessee 26 Jul 1984 Edward Chester
Polygonum buxiforme
APSC0007556 Stewart Tennessee
Polygonum buxiforme
APSC0079480 Fleming Kentucky
Polygonum buxiforme
APSC0075239 Campbell Kentucky
Polygonum buxiforme
APSC0007552 Stewart Tennessee 26 Jun 1984 Edward Chester
Polygonum buxiforme
APSC0007746 Trigg Kentucky 13 Oct 2003 Ralph Thompson
Polygonum buxiforme
APSC0075240 Campbell Kentucky
Polygonum buxiforme
APSC0007745 Lyon Kentucky 15 Oct 1987 Edward Chester
Polygonum buxiforme
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