How many kinds??
I noted there are some real Botantists on this list and thought this a could place to ask some basic questions.
1 what is the current estimate on how many different specie of plants.?? Just those that are definitely plants.
Not the commensuls, fungi,microscopic,or lichens mildews
virus and bacteria algae.
2 I've heard estimates that 3/4 of all plant specie occur only within the tropics and there are probably at least an equal amount of unknown specie??
3 What is the most common plant?? Again just those that a gardener would identify as a plant not those that can't make up their mind lol.
4 What is the current estimate on natural hybrids??
5 Does grafting happen naturally??
Please don't go to a lot of trouble to answer these questions.Whatever knowledge you happen to have is fine.
Some sources of further reading would be great!!