Robert W. Freckmann Herbarium


  Persicaria amphibia (L.) S.F.Gray image
Photographer: Thomas Givnish           

Botanical Illustration

Botanical Illustration

Arthur Meeks

Matthew L. Wagner

Paul Skawinski

Paul Skawinski

Robert Bierman

Robert Bierman

Botanical Illustration

Botanical Illustration

Emmet J. Judziewicz

Emmet J. Judziewicz

Emmet J. Judziewicz

Botanical Illustration

Botanical Illustration

Dennis W. Woodland
Family Polygonaceae
Persicaria amphibia (L.) S.F.Gray
water heart's-ease, water smartweed
Persicaria: peach-like, the medieval name for knotweed
amphibia: amphibious, suited for or adapted to growing on land or in the water
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
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Status: Native
Plant: erect, terrestrial or floating, perennial, aquatic forb 1'-5' tall; stems branched with usually several major stems flowering; from rhizomes
Flower: pink to red, 5-parted, 3/16" long, cup-shaped, petals and petal-like sepals bluntly rounded at the tip and connected at the base; inflorescence 3/4"-6" solitary or paired, spike-like, terminal clusters 1/3"-3/4" thick on a stalk jointed at the top; blooms June-Sept.
Fruit:shiny, dark, dry seed
Leaf:alternate, base not jointed, up to 2 1/3" wide
Habitat: wet; meadows, shallows, water < 7' deep; in sediment soil
(Glossary)

More Information Natural Communities Herbarium Specimens
All Persicaria list Ethnobotany Information Google- Images or Text

Flora of North America (off site)
Synonyms 
Persicaria amphibia (L.) S.F.Gray var. emersa (Michx.) Hickman
Persicaria amphibia (L.) S.F.Gray var. stipulacea (N.Coleman) Hara
Persicaria coccinea (Muhl.) Greene
Persicaria mesochora Greene
Persicaria muhlenbergii (S.Watson) Small
Persicaria nebraskensis Greene
Persicaria pratincola Greene
Polygonum amphibium L.
Polygonum amphibium L. f. hirtuosum Farw.
Polygonum amphibium L. f. terrestre (Willd.) S.F.Blake
Polygonum amphibium L. subsp.laevimarginatum Hultén
Polygonum amphibium L. var. amphibium
Polygonum amphibium L. var. coccineum (Muhl. ex Willd.) Farw.
Polygonum amphibium L. var. emersum Michx.
Polygonum amphibium L. var. hartwrightii (A.Gray) Bissell
Polygonum amphibium L. var. stipulaceum N.Coleman
Polygonum amphibium L. var. stipulaceum N.Coleman f. fluitans (Eaton) Fernald
Polygonum amphibium L. var. stipulaceum N.Coleman f. hirtuosum (Farw.) Fernald
Polygonum amphibium L. var. stipulaceum N.Coleman f. simile Fernald
Polygonum amphibium L. var. terrestre Willd.
Polygonum coccineum Muhl. ex Willd.
Polygonum coccineum Muhl. ex Willd. f. natans (Wiegand) Stanford
Polygonum coccineum Muhl. ex Willd. f. terrestre (Willd.) Stanford
Polygonum coccineum Muhl. ex Willd. var. pratincola (Greene) Stanford
Polygonum coccineum Muhl. ex Willd. var. rigidulum (E.Sheld.) Stanford
Polygonum coccineum Muhl. ex Willd. var. terrestre Willd.
Polygonum fluitans Eaton
Polygonum hartwrightii A.Gray
Polygonum inundatum Raf.
Polygonum muhlenbergii S.Watson
Polygonum muhlenbergii S.Watson f. natans Wiegand
Polygonum muhlenbergii S.Watson var. terrestre (Willd.) Trel.
Polygonum natans Eaton
Polygonum natans Eaton f. genuinum Stanford
Polygonum natans Eaton f. hartwrightii (A.Gray) Stanford
Polygonum natans Eaton f. natans
Polygonum rigidulum E.Sheld.
Polygonum terrestre (Willd.) Britton, Sterns & Poggenb.

         
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