Ferns were popular with Victorians (less so in the 20th century), as I expect you know, so there is a fair amount of unidentified etched glass about. Cameo vases often have woodland scenes, but they are expensive. Engraved Bohemian glass sometimes has woodland scenes (with hunting or deer).
It's a very specific request and one you are unlikely to get very helpful answers to, so my only suggestion is regular searching of ebay and online shops selling glass.