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Persicaria lapathifolia (formerly known as Polygonum
lapathifolium; Polygonaceae) 3:591
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| Persicaria
lapathifolia (pale knotweed) is a widespread weed in
seasonally or continuously wet places. It is an erect to
ascending herb to 50-180 cm high. It is usually usually
glabrous but is sometimes quite hairy. The leaves are ovate
to narrow elliptic, 6-21cm long by 10-45mm wide, dense with
glands on lower surface. The spikes are dense and elongate
with flowers overlapping. |
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University of Tasmania