deeply disconcerting daffodils

From Sunday: I did not quite believe what I was seeing initially? Or perhaps better I did not quite understand what I was seeing. Brain was entirely made of "daffodil??? backwards?????"

As a consequence of attempting to hunt down the variety (which I had failed to make a note of while actually in its presence) I realised I could ask the RHS to show me a list of all the daffodil cultivars they know about. Apparently this is actually a subgenre with several members! But the thing that has thus far made me squawk WHAT most loudly is, without contest, Narcissus viridiflorus.