Resembling the pansy, it has yellow flowers (5)
I believe the answer is:
tansy
'yellow flowers' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for tansy that I've seen before include "Herb used as seasoning" , "plant for medicinal use" , "Plant with yellow flowers" , "Aromatic wild plant" , "Flowering plant" .)