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Photographer: Emmet J. Judziewicz
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Family Polygonaceae
Persicaria sagittata (L.) H.Gross
arrow-leaved tear-thumb
Persicaria: peach-like, the medieval name for knotweed
sagittata: from the Latin for "arrow" and hence sagitate
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| Status: | Native |
| Plant: | climbing or tangling, annual, 3'- 6' tall, slender forb; 4 -angled stems very prickly |
| Flower: | pink to white, 3/8" long, stalkless, petals and petal-like sepals; inflorescence short, rounded, uninterrupted clusters on long stalks both terminal and from the leaf axils; blooms Aug.-Oct. |
| Fruit: | dry, 3-angled seed |
| Leaf: | alternate, lance-like to elliptical, with narrow, downward-pointed lobes forming a heart-shaped base that surrounds the stem |
| Habitat: | wet; marshes, swamps, streambanks |
| Notes: | very similar to P. arifolia except for shape of leaf |
| (Glossary) |
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