Flower and sulphur brought to ancient city (5)

I believe the answer is:

stour

(Other definitions for stour that I've seen before include "Harwich's river" , "Constable country river" , "Essex/Sussex border river" , "River - roust (anag)" , "English river" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.