单词	pickerelweed
释义	pickerelweed /ˈpɪkərəlˌwiːd / noun [mass noun] Either of two broadleaved freshwater plants which were formerly believed to give rise to, or provide food for, young pike. A North American plant with spikes of blue flowers (Pontederia cordata, family Pontederiaceae). British dialect term for pondweed. Among them are arrow arum, bull-tongue arrowhead, pickerelweed, water lettuce, white water lily, yellow water lily, and the invasive alligator weed.... The ubiquitous saw grass rattles in the wind, while pond-apple trees, yellow pond lilies, and pickerelweed, with its iridescent purple flowers, line the riverbanks. Pickerelweed is a perennial plant that can grow up to 3 1/2 feet tall.
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