Wild plants in and around Shimane 島根とその周辺の野生植物




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Polygonaceae /


Species in the genus Polygonum:

Polygonum caespitosum var. laxiflorum / Hanatade
Polygonum conspicuum / Sakuratade
Polygonum cuspidatum / Itadori
Polygonum debile / Miyamatanisoba
Polygonum filiforme / Mizuhiki
Polygonum filiforme f. albiflorum / Ginmizuhiki
Polygonum hydropiper / Yanagitade
Polygonum japonicum / Shirobanasakuratade
Polygonum lapathifolia var. indica / Sanaetade
Polygonum lapathifolia var. lathifolia / Ooinutade

Polygonum longisetum /  Inutade
Polygonum longisetum f. albiflorum / Shirobanainutade
Polygonum multiflorum / Tsurudokudami
Polygonum nepalense / Tanisoba
Polygonum nipponense / Yanonegusa
Polygonum orientale / Oobenitade
Polygonum perfoliatum / Ishimikawa
Polygonum polyneuron / Akinomichiyanagi
Polygonum pubescens / Bontokutade
Polygonum senticosum /  Mamakonoshirinugui
Polygonum sieboldii / Akinounagitsukami
Polygonum thunbergii / Mizosoba

Polygonum perfoliatum / Ishimikawa イシミカワ

Polygonum perfoliatum is a creeping annual found on roadsides, paths in rice paddies, or dry river beds. The stems grow to 1-2m long and twine around other trees or weeds with sharp downward prickles. Leaves are triangular, 2-4cm in length; their petioles, shield-shaped, sit at the close-to-bases portion of the blades. Ochreas are short, and the upper parts expand to grow round. From stem tops and leaf-axils emerge racemes with masses of small green flowers in them. At the bases of the racemes exist leaf-like bracts, which is striking. Bloom time: July-October.




inserted by FC2 system