<<sigh>> you have such organized options in the UK, and in the US and Canada no doubt. That's not really available here, at least that I've ever found. There is an ebay type online store but they rarely use scientific names either. There is one nursery in the city that I've found usually does know the scientific name and seem much more interested and professional about it. I will have to go and see if they offer the plant and whether they know what it is.
Is it possible that the wrinkling of the leaves is due to our intense sun? These are in full sun and they have not moved as quickly into the bordering areas that are in shade.