water mat

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Noun1.water mat - aquatic herb with yellowish flowers; central and western United States
Chrysosplenium, genus Chrysosplenium - genus of widely distributed semiaquatic herbs with minute greenish-yellow apetalous flowers
golden saxifrage, golden spleen - any of various low aquatic herbs of the genus Chrysosplenium
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Other successes in filtration include the Tribo-R liquid biofiltration media and the Hydro Switch capillary water mat. Texel has also been recognized as a root control specialist for green roofs, a concept under development in the U.S.