Download or read book Ecological Strategies of Xylem Evolution written by Sherwin John Carlquist and published by Univ of California Press. This book was released on 1975-01-01 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferms. Pteridophytes pther tham ferms. Fossil pteridophytes. Stelar theory. Cycads and ginkgo. Conifers and taxads. Monocottledons; nymphacales. Vesseless dicotyledons. Dicotyledons with primitive vessels; gnetales. Specialization in dicotyledonous wood. Sieve elements; extraxylary mechanical tissue.