Yellow primrose (5)
I believe the answer is:
oxlip
'yellow primrose' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oxlip that I've seen before include "Primula with yellow hanging flowers" , "Flowery name" , "Type of primula" , "Eurasian primrose with yellow flowers" , "Flowering plant" .)