Additional notes on vegetation of dry openings along the Trent River, Ontario

Abstract

Additions and corrections are provided for two tables which accompanied a recently published description and analysis of dry, open, natural habitats along the Trent River in the eastern portion of southern Ontario. The vascular floras of two additional dry open areas near Crowe Bridge and Campbellford are recorded. The former site is on shallow soil over limestone and includes some of the few examples of alvar plant communities that remain undisturbed and relatively rich in native species along the Trent River system. The latter site is an important addition to the relict limestone savannas that provide an indication of the natural vegetation that once characterized much of the Trent River system. It is also of phytogeographic interest and includes a rich native flora and rare species.