Staple parts of flower (6)
I believe the answer is:
petals
'flower' is the definition.
Although both the answer and definition are nouns, they are not in the same form of the noun.
'staple parts' is the wordplay.
'parts' indicates an anagram (the parts of the original word ordered differently).
'staple' is an anagram of 'PETALS'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for petals that I've seen before include "Plates (anag.)" , "Flower parts on plates" , "Parts of flowers in pastel" , "Outer parts of flowers" , "Palest parts of flowers" .)