Robert W. Freckmann Herbarium


  Persicaria arifolia (L.) Haraldson image
Photographer: Merel R. Black           

Botanical Illustration

Merel R. Black

Merel R. Black

Merel R. Black

Robert W. Freckmann

Robert W. Freckmann
Family Polygonaceae
Persicaria arifolia (L.) Haraldson
halberd-leaved tear-thumb
Persicaria: peach-like, the medieval name for knotweed
arifolia: leaves like Arum
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: climbing or tangling, annual, 3'-6' long, slender forb; 4 -angled stems very prickly
Flower: pink to white, 5-parted, 3/8" long, egg-shaped, stalkless, petals and petal-like sepals; inflorescence short, rounded, uninterrupted clusters both terminal and from the leaf axils; blooms Aug.-Sept.
Fruit:dry seed
Leaf:alternate; triangular with wide, flaring lobes at the base
Habitat: wet; marshes, swamps, wet meadows
Notes: very similar to P. sagittata except for shape of leaf
(Glossary)

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

Flora of North America (off site)
Synonyms 
Polygonum arifolium L.
Polygonum arifolium L. var. lentiforme Fernald & Griscom
Polygonum arifolium L. var. pubescens (R.Keller) Fernald
Polygonum sagittatum L. var. pubescens Keller
Tracaulon arifolium (L.) Raf.

         
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