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Any of various plants of the genera Persicaria and Polygonum, having sheathlike stipules and small, densely clustered pink, white, or green flowers.


(Plants) any of several perennial aquatic plants of the genus Polygonum. Also called: water pepper



any of several weeds belonging to the genus Polygonum, of the buckwheat family, that have a smarting, acrid juice.
References in classic literature ?
I used to love to drift along the pale-yellow cornfields, looking for the damp spots one sometimes found at their edges, where the smartweed soon turned a rich copper colour and the narrow brown leaves hung curled like cocoons about the swollen joints of the stem.
This particular bird was a loner, a high-flying drake that locked up without hesitation upon seeing the small spread we'd set just outside the smartweed.
While hunting a small pothole surrounded by woods, I shot a gadwall that sailed across the water and pitched into a jungle of downed timber, dried water lily stalks and smartweed.
Without looking up from the pale smartweed Bud said, "Come in.
walkeri were collected at the margin of the Lake in what the author described as "a dense smartweed swamp.
The nine most-common plant species found in 20 PEM1 wetlands in the northern Sierra foothills were (not in order of prevalence) (A) common rush, (B) water smartweed, (C) sand spikerush, (D) rice cutgrass, (E) Baltic rush, (F) dallis grass, (G) common spikerush, (H) cattail and (I) willowherb.
acutus), bur reed (Sparganium androcladum), smartweed (Polygonum spp.
The rectangular cells were densely vegetated with water smartweed, johnsongrass, and alligator weed.
In the fields, look for Deptford pink, smartweed, tall meadow rue, great mullein, leatherflower, sow thistle, wild petunia, Queen Anne's lace and the bright blue Asiatic dayflower.
Xinhua"), Smartweed Investments Limited ("Smartweed") and Max Winner Investments Limited ("Max Winner") (individually, the "Subscriber" and collectively, the "Subscribers") in relation to the issuance and purchase of 1,500,000 new common Shares ("Subscription Shares"), of par value US$0.
The thaw brings smartweed, cockleburr, The sheafing man your parents knew.