they range in size to what is described as "micro"...not only do they appreciate being cool, but they also like damp (but not soggy feet of course). The onyl reason why I know of the micro's is because the gh I used to work for got some in by accident. They sold pretty much on the spot too. I've thought about picking up one out of curiosity's sake. If you wanna know more about them, Google the Cyclamen Society (or whatever search engine you prefer). They have alot of info on species, some not so common.