Forum Flora Germanica

https://commons.wikimedia.org/wiki/File ... SC7218.jpg

What is that. I mean what does variedades crespa mean ? Is that L. s. subsp. crispa ?
Because it looks like gentile to me. Which should only, AFAIK, be Lactuca sativa. + cv. Kayac or cv, Guenola or ...

ref. for me: https://flanca.si/solatnice/

I don't understand your question. "variedades crespa" is a crispate variety, as they occur in dozens of culture forms.

It is quite impossible to find proper taxonomic names for the horticultural varieties of a species which is in culture for hundreds of years. Meaningful taxonomy reaches here its limits.

Michael