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Persicaria
perforiata is a creeping annual found on
roadsides, paths in rice paddies, or dry river beds.
The stems grow 1-2m long and twine around other
trees or weeds with sharp downward prickles. Leaves
are triangular, 2-4cm long; their shield-shaped
petioles sit at the close-to-bases portion of the
blades. Ochreas are short, and the upper parts
expand to grow round. Racemes with small green
flowers emerge from stem tops and leaf axils.
Leaf-like bracts exist at the bases of the racemes,
which is striking. Bloom time: July-October. |
Wild plants in and around Shimane
島根とその周辺の野生植物
