Here’s an interesting post from the Permaculture Research Institute about recognising plant families as patterns in nature.
I’ve been an amateur botanist for a good many years now and this sort of thing resonates with me. I love investigating new plants and seeing if I can pick the family from the plant’s characteristics. I use the concept when planting; I can never remember what to follow with what in recommended crop rotations. Far easier to recognise plant families and to not plant members of the same botanical family in succession.
Probably this could be used as a good example of Permaculture Principle #1 in practice—observe and interact.