Persicaria

Persicaria is the botanical name for a group of often invasive perennials, annuals and climbers that are mainly grown for their handsome flowers, which are often in spikes. P. bistorta 'Superba' forms clumps, 24 to 30 inches high, of oval, mid-green leaves and triangular stem leaves. In the summer, dense, cylindrical spikes of tiny, pale pink flowe...
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Persicaria

Per`si·ca'ri·a noun [ New Latin , from Late Latin persicarius a peach tree. See Peach .] (Botany) See Lady's thumb .
Found on http://www.encyclo.co.uk/webster/P/61

Persicaria

• (n.) See Lady`s thumb.
Found on http://thinkexist.com/dictionary/meaning/persicaria/

Persicaria

Persicaria is a genus of flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as smartweeds. It has a cosmopolitan distribution, with species occurring nearly worldwide. The genus was segregated from Polygonum. The genus includes annual and perennial herbs with taproots or fibrous root systems, and sometime...
Found on http://en.wikipedia.org/wiki/Persicaria
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