Other
Hamilton College: Plant Kingdom Spore Producers
A solid overview of the few plants that reproduce by spore production. Includes examples and an explanation of the early evolution of these plants.
University of Hawai'i
University of Hawaii: Bryophyte Reproductive Cycle
An explanation of the plants that reproduce by the production of spores. Includes extensive graphics.
Biology Pages
Kimball's Biology Pages: Asexual Reproduction
Site from Kimball's Biology Pages provides information on Asexual Reproduction in plants, and also in animals, where it is less common. Includes information on stems, leaves, roots, plant propagation and apomixis.