 It is ectomycorrhizally associated with several tree species and is symbiotic with them . In Europe , these include hardwood and , less frequently , conifer species . It appears most commonly under oaks , but also under beeches , chestnuts , horse @-@ chestnuts , birches , filberts , hornbeams , pines , and spruces . In other areas , A. phalloides may also be associated with these trees or with only some species and not others . In coastal California , for example , A. phalloides is associated with coast live oak , but not with the various coastal pine species , such as Monterey pine . In countries where it has been introduced , it has been restricted to those exotic trees with which it would associate in its natural range . There is , however , evidence of A. phalloides associating with hemlock and with genera of the Myrtaceae : Eucalyptus in Tanzania and Algeria , and Leptospermum and Kunzea in New Zealand . This suggests the species may have invasive potential . 
