I'm not sure... sometimes flower color is a good indicator. The hybrids tend to be much more colorful. Also, leaf size--all the hybrids I know of have big leaves (hand size) but so do some of the wild types. There are so many varieties that it is hard to determine the exact species. I'm still learning the ones in my area--there is really only one that I can identify every time if I see it growing away from my property. Even on my property there are 2 types that look about the same until they flower--one is pink and the other is purple. Sorry can't give more specific advice =/