Plants from State I’d overlooked (5)
I believe the answer is:
flora
'plants' is the definition.
(I've seen this before)
'state i'd overlooked' is the wordplay.
'state' becomes 'florida' (US state).
'overlooked' suggests deleting specific letters.
'florida' with 'id' taken out is 'FLORA'.
'from' is the link.
(Other definitions for flora that I've seen before include "The plants of an area (5)" , "Plants of a particular region" , "Roman goddess of flowers" , "Various plants" , "Form of life" .)