Can I ask you to have a look at Water Avens (Geum rivale) | Observation | UK and Ireland | iSpot Nature? It’s been suggested elsewhere that this is a common aberration but no-one has been able to give it a name or help me to find anything else about it.
Help, please.
In Primula vulgaris this is known as a hose-in-hose form.
An example in Geum is reported from Skye - Plant News | Plants of Skye, Raasay & The Small Isles.
Other examples, courtesy of Google, are Iris pseudacorus ‘Flore Pleno’ and Iris sibirica ‘Having Fun’.
Many thanks. If you have no objection, I’ll copy that to a comment on the original observation (with, of course, proper acknowledgement.)