Trade designations are names used to market plants when it is considered that the cultivar name is unsuitable for selling purposes, perhaps because it is in a different language from the country in which it is being sold, or because the cultivar name is little more than a code or nonsense name.
It is important that trade designations appear distinct from cultivar names and need to be printed differently, styled in a different print face, without single quotation marks. The first letter of each word is capitalised and italics are not used. However the cultivar name must appear alongside the trade designation but can be kept separate by enclosing in brackets.
For example: Genus name + specific epithet (if required) + Trade Designation + Cultivar name
Geranium + sanguineum + Alan Bloom + ‘Bloger’ = Geranium sanguineum Alan Bloom (‘Bloger’)