swamp smartweed

Family

Polygonaceae

Scientific Name

Polygonum hydropiperoides

Other Common Names:

opelousa smartweed

northeastern smartweed

Synonyms (former Scientific Names):

Persicaria opelousana

Polygonum hydropiperoides var. opelousanum

Polygonum hydropiperoides var. euronotorum

Polygonum hydropiperoides var. breviciliatum

Persicaria hydropiperoides

Polygonum hydropiperoides var. bushianum

Polygonum hydropiperoides var. strigosum

Polygonum opelousanum var. adenocalyx

Polygonum opelousanum

Persicaria persicarioides

Polygonum hydropiperoides var. adenocalyx

Polygonum hydropiperoides var. digitatum

Persicaria hydropiperoides var. euronotora

Polygonum hydropiperoides var. asperifolium

Polygonum hydropiperoides var. psilostachyum

Persicaria hydropiperoides var. breviciliata

Polygonum persicarioides

Persicaria hydropiperoides var. opelousana

Persicaria paludicola

Growth Habit

upright and nonwoody

Thorns or Spines

not present

Approximate Flower Diameter

pencil

Dominant Flower Color

pink

Flower Symmetry

radial symmetery

Leaf Hairs

Varies:

has hairs,

no hairs

Leaf Shape

lance

Leaf Arrangement

alternate

Leaf Margin

Varies:

entire,

lobed

Leaf Structure

simple

Leaf Stalk

Varies:

none,

shorter than leaf

Stem Hairs

no hairs

Stem Cross Section

round or oval

Milky Sap

not present

Root Structure

Varies:

fibrous,

rhizomes present

Life Cycle

perennial

Ochrea

present

Plant Type

Herb