Author Jong (5)
I believe the answer is:
'author jong' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for erica that I've seen before include "Girl - heather" , "Girl's name - I care (anag)" , "Girl's name - heather" , "Shrub genus; girl's name" , "Plant of the heath genus" .)