Maricopa Community College: Nonvascular Plants and Nonseed Vascular Plants

Very detailed outline describing several aspects of plant diversity, including vascular vs. nonvascular, evolutionary adaptations, homosporous and heterosporous life cycles, and specific information on some ancient species (Lycophytes, Psilophytes, etc.). Many pictures and diagrams accompany the information, as well as learning objectives, review questions, and links to outside references.