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Photographer: Merel R. Black
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Family Polygonaceae
Persicaria arifolia (L.) Haraldson
halberd-leaved tear-thumb
Persicaria: peach-like, the medieval name for knotweed
arifolia: leaves like Arum
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| 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) |
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