St. Pierre Island, Farquhar Group, was once covered by a Pisonia grandis forest.
Alsophis sanctonum occurs along mangrove edges, roadsides, gardens, wooded areas, preferentially in semi-deciduous forest with Pimenta racemosa, Pisonia grandis, Guapinol, and Bursera simaruba.
Pisonia | Pisonia grandis | Eucalyptus grandis | Abies grandis | Oxalis grandis |