Klevner, like clevner, is, and more particularly was, used fairly indiscriminately in Alsace and other German-speaking wine regions for various vine varieties, notably but not exclusively for various members of the pinot family. References to Klevner in Alsace in the mid 16th century are common.
ยฉ Jancis Robinson and Oxford University Press 1994, 1999, 2006, 2015