Comunidad de Quercus pringlei-Pinus cembroides: Micro-mesobosque semicerrado dominado por el pino pinonero (Pinus cembroides) al que acompanan formando parte del sotobosque micro y nanofanerofitos como Ceanothus greggii, Comarostaphylis polifolia, Eupatorium scorodonioides, Lindleya mespiloides,
Ptelea trifoliata, Quercus pringlei, Sophora secundiflora y Yucca carnerosana.
Several vascular plants officially listed as species at risk either federally (under the Canadian Species At Risk Act, SARA) or provincially (under the Ontario Endangered Species Act 2007) occur on the Canadian Erie Islands, including Grand Redstem (Ammania robusta), Atlantic Camas (Camassia scilloides), Dwarf Hackberry (Celtis tenuifolia), Blue Ash (Fraxinus quadrangulata), Kentucky Coffcetrec (Gymnocladus dioicus), Crimson-Eyed Rose-Mallow (Hibiscus moscheutos), American Water-Willow (Justicia americana), Brown Wide-Lip Orchid (Liparis liliifolia), Red Mulberry (Morus rubra), Eastern Prickly-Pear (Opuntia bumifusa), Common Hoptree (
Ptelea trifoliata) and Climbing Rose (Rosa setigera) (COSEWIC 2009; Ontario Ministry of Natural Resources 2009).