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Photographer: from USDA Plants website
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Family Polygonaceae
Polygonum aviculare L. subsp. buxiforme (Small) Costea & Tardif
box knotweed, boxwood knotweed
Polygonum: derived from the Greek words polys, "many," and gonu, "knee or joint," hence "many joints" because of the thickened joints on the stem
buxiforme: bux for "box" and forme for "form" or "shape"
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| Status: | Native |
| Plant: | sprawling to matting annual forb; stems with many branches |
| Flower: | white to pink edges, 5-parted, petals and petal-like sepals joined at the base and hooded, 3 outer longer than other 2; inflorescence small clusters from the leaf axils |
| Fruit: | dark brown, dull, dry seed |
| Leaf: | alternate, flat, oblong, jointed at the base |
| Habitat: | marsh edges, dunes; in sandy soil |
| (Glossary) |
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