Flora of North America: North of Mexico Volume 2: Pteridophytes and Gymnosperms

In Volume 2, over 50 contributors exhaustively describe and classify the ferns, fern allies, and gymnosperms of North America. Covering over two dozen fern and half a dozen gymnosperm families, they survey fern species of both ecological and horticultural importance and review such gymnosperm taxa as the conifers—the dominant trees in many forests as well as important timber plants—and cycads, which display significant evolutionary features. In all, the volume assembles 509 species of ferns a…