Copyright 1998-2017 Yoshiaki Yoneda
The writer did not do expect to be able to cross Calystegia hederacea with C. soldanella, but its interspecific hybrid was indeed successfully bred for the first time. The leaves are in an intermediate form between the parents: not so long, not so kidney-shaped, and not so triangular. The leaves are not so thick as those of Calystegia soldanella. Photo taken 1988.5.24.
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