Vigorous climbing and twining plant to 3 metres. Leaves bright green and arrow shaped. Flowers white, 30 to 50 mm. Bracts not overlapping or scarcely so.
Woods, hedges and waste places.
June to September.
Perennial.
Common and widespread throughout most of Britain.
Common in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 429 of the 617 tetrads.
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