Generational ID for mericlones?

[katsucats]

I'm not an expert so I could be wrong, but my understanding is that F1 refers to the first filial generation between two distinct lines. Then, F2 refers to sibling crosses between an F1 line. And F3 refers to the sibling crosses between 2 F2's.

I'm not sure if I've seen anyone refer to a selfing or backcross as F2. That feels incorrect. And a meristem should be an exact replica of the mother plant, so it should not be referred to as F1, in my opinion.

But maybe there's different terminology in the orchid industry, I don't know.