Polygonum Hydropiper

from The Collaborative International Dictionary of English v.0.48

Smartweed \Smart"weed`\, n. (Bot.)
   An acrid plant of the genus {Polygonum} ({Polygonum
   Hydropiper}), which produces smarting if applied where the
   skin is tender.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Hydropiper \Hy"dro*pi`per\, n. [NL., fr. Gr. "y`dwr water + L.
   piper a pepper.] (Bot.)
   A species ({Polygonum Hydropiper}) of knotweed with acrid
   foliage; water pepper; smartweed.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Lakeweed \Lake"weed`\, n. (Bot.)
   The water pepper ({Polygonum Hydropiper}), an aquatic plant
   of Europe and North America.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Culrage \Cul"rage\ (k?l"r?j), n. [OE. culrage, culrache; prob.
   fr. F. cul the buttok + F. & E. rage; F. curage.] (Bot.)
   Smartweed ({Polygonum Hydropiper}).
   [1913 Webster]

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