These three plants were purchased among many others. Only these are still without a name. The first two are very tree-like and the third looks a bit like a begonia. The begonia-like plant has symmetrical leaves though and a silvery green strip in the middle of each leaf. The plant resembles a tight rosette - short stalk and leaves radiate from this close to each other. I cannot find any of these in e.g. Dr Hessayon's books. Maybe they are varieties of something very common but I cannot ID them. Thank you for help.