Synonym for the grape variety Solonis; see there.
The vine is an interspecific, probably spontaneous cross between American wild vines of the species Riparia x Longii. Synonyms are Pubescens, Riparia Pubescens, Riparia Rouge, Robusta, Solonis de Laval, Solonis...
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Roman Horvath MW
Domäne Wachau (Wachau)