Name silly individual in plant (7)
I believe the answer is:
anemone
'plant' is the definition.
(anemone is a kind of plant)
'name silly individual' is the wordplay.
'silly' indicates an anagram.
'individual' becomes 'one' (an individual is one person).
'name' with letters rearranged gives 'anem'.
'anem'+'one'='ANEMONE'
'in' acts as a link.
(Other definitions for anemone that I've seen before include "Colourful plant of buttercup family" , "Tentacled sea dweller, flower" , "bloom" , "Plant of the buttercup family - one name (anag)" , "Growth" .)