I believe Flora Pleno is the double form of N jonquilla and Double Campernelle is the double form of Campernelle. I grow both and they are quite different. To me the photo from Paul Botting is definitely the Campernelle form. The double jonquil is the same size` as the species with tight doubling.
Dave
Reg. Sara Van Beck’s question: I think Double Campernelle is taller, larger and floppier.I have only seen N. flore pleno once and it was virused so I destroyed it. I think all of the available stock is virused from what I know. It was a nice flower. Nancy R. Wilson
Reg. Sara Van Beck’s question: I think Double Campernelle is taller, larger and floppier.I have only seen N. flore pleno once and it was virused so I destroyed it. I think all of the available stock is virused from what I know. It was a nice flower. Nancy R. Wilson