Nodding or Common Smartweed
    or Water-pepper
Nodding or Common Smartweed
    or Water-pepper
Polygonum hydropiper
Buckwheat Family - Polygonaceae
The somewhat zig-zag, reddish-tinged stem is slightly swollen at each leaf axil (joint-like) where the stem is sheathed. Cylindrical sheathes without bristles. Greenish-white flowers slightly separated along nodding terminal clusters. Leaves alternate, lance-shaped and entire.
(Photographed - late August)
Usually growing in a considerably sized group in damp areas or along shores.
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