You are free to do that, but keep in mind that the most interesting plants/animals will be location bound
And I like the idea of many things being two sided, with everything being dangerous if used wrong, but potentially very useful if used right.
For example the sleep fruits would make a great aneastasiac (or however that is spelled) if you pick the fruits and take them somewhere safe (all they do is put you to sleep and mark you for the birds)

I added a very simple form (that is the exact same Varionus used). If you want to make a creation official you can use this form. It would be best if you added whether you want this thing/animal/plant to grow/live/whatever on different places as well.

Using any of the extra features (map, creature database, etc) is entirely optional, but encouraged :P