This cultivar was listed on the Hosta Lists website.  Originated by Heinz Klose of Staudengärtnerei Klose in Germany, this non-registered cultivar is a seedling of H. 'Tardiflora' × H. 'Elegans' and is therefore considered to be a Tardiana-type hosta. Most likely it is medium size plant with blue-green foliage.

Named for a river in Germany which is a tributary to the Rhine River.