The Pteridophytes include the highly differentiated vascular cryptogams, living on land. They show a distinct alternation of generations in their life cycle. The gametophyte or the prothallium consists of flat, filiform or tuberous thallus of some millimeters, while the sporophyte is a large body provided with vegetative organs: the stems, leaves and roots, and also the differentiated tissues, represented by various kinds of vascular bundles. Of interest to every botanist, specialists in forestry, geographers, relevant research institutes, paleobotanists, institutes for applied botany, institutes for wood research, agricultural colleges, science libraries.The modus of departure of branch traces is different according to the different type of the stem stele. ... 11) (Renault 1896 b, Graham 1935 a). ... 300. Diagram to show the construction of the xylem Class Filicopsida: Order Coenopteridales 267.
|Title||:||Comparative Anatomy of Vegetative Organs of the Pteridophytes|