Superhero gets New York to replace trademark tree (6)
I believe the answer is:
banyan
'tree' is the definition.
(banyan tree is a kind of tree)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for banyan that I've seen before include "Crush underfoot" , "Indian fig tree with self-rooting branches" , "Multi-trunked Indian tree" , "Fig tree with aerial roots" , "Any ban for an Indian tree" .)