Examines the key characteristics of nonflowering plants, explaining what they are and what they look like, discusses classes of nonflowering plants, and features descriptions of a selection of nonflowering plant orders, including mosses, horsetails, conifers, and others.

The variety of life -- Nonflowering plant divisions -- The plant kingdom -- Liverworts and hornworts -- Mosses -- Whisk ferns -- Club mosses, spike mosses, and quillworts -- Horsetails -- Ferns -- Seed plants -- Conifers -- Other gymnosperms -- Organizing nonflowering plant.