Yeah, I've been thinking that as well, and that's why I thought it would be better to put some plants in the same group, even if they don't have that much in common, to avoid having 20 or more plant groups. Keep in mind that still there are no common plants like linen, beans, onion, coffee, pea, cucamber yet. So they would probably add even more goups.
The question is what would be better - to have 20 different groups of plants with 3-4 very similar subspecies, or 10 groups with 3-4 varied subspecies? In the end I think those subspecies don't have to have too much in common in real life, as long as they have common uses in the game. And most of those uses is food anyway
