Where do you want to save Epilobium canum 'Splendens Plenum' (Z/d)?
Zauschneria californica subsp. cana 'Splendens Plena', Zauschneria cana 'Splendens Plena'
Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers
For example: Dahlia ‘Sunset Kate (Sin) = Single flower Rosa ‘Marigold’ (HT) = Hybrid Tea