Susan" schreef
I've never heard that a botanical name can have no more than 3 parts --
where did you find that information? I don't *think* it's in the code
that way.

IPNI designed their database so that no name would have more than 3
parts. Personally, I don't see how a 4-part name is "A Classification"
and a 3-part name isn't.

Susan, new to the group (well, I was here before google took them over)
PhD student in Botany

***
This question is easy. See Art 24.1 and its Ex 1 !
PvR