Botanist may look thus on next page (8)
I believe the answer is:
overleaf
'botanist may look thus' is the definition.
I can't judge whether this definition defines the answer.
'on next page' is the wordplay.
'on' becomes 'over' (over can mean on top of).
'next' means one lot of letters go next to another (I've seen this in other clues).
'page' becomes 'leaf' (leaf can mean a page).
'over'+'leaf'='OVERLEAF'
Can you help me to learn more?
(Other definitions for overleaf that I've seen before include "On the page's other side" , "next page - with 12a" , "On the next even-numbered page" , "What vigorous 26 [TREE] may do" , "On the other side of the page" .)