We describe and compare the seedlings of 70 species of trees, shrubs, and woody/semi-woody vines of dicotyledons sensu lato which have epigeal germination and which grow wild in south Florida. For each species we characterize the macroscopical features of the hypocotyl, cotyledons, supra-cotyledonary internodes, and supra-cotyledonary leaves as well as the presence vs. absence of, the kinds of, and the distribution of trichomes. We conclude with a taxonomic key for identifying the seedlings of all considered species. Fifty-nine and 11 of the investigated species are native to, and exotic within Florida, respectively.

Sanibel Island (Lee Co., Florida) manifests eight main categories and 12 subcategories of habitats, and individual plant taxa occupy habitat(s) from one or more of those categories. Documented, presently as growing wild/apparently wild on Sanibel Island are individuals of 119 families, 397 genera, 611 species (including two hybrids), and 621 infrageneric taxa of vascular plants. Of the 621 infrageneric taxa, 420 (67.6%) are native and 13 (2.1 %) are endemic to Florida. We interpret the Island’s flora in terms of its history of severe natural and artificial disturbances.