. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. OSMUNDACEAE 531 their length :1 in the upper regions this is more obvious than in the lower, where modifications of reduction and of special development are Fig. 293. A =\e*( of Osmunda Presliana, J. Sm. S = young plant al Osmundaregtlis, L. C- Ieaf of mature plant of Osmunda regalis. (From Engler and Prantl, Nat. Pflanzenfam.) In the Osmundaceae this results in the formation of the broad protective leaf-base. In Osmunda the wings are traceable as continuous down to the iSee Phil. Trans., 1884,
. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. OSMUNDACEAE 531 their length :1 in the upper regions this is more obvious than in the lower, where modifications of reduction and of special development are Fig. 293. A =\e*( of Osmunda Presliana, J. Sm. S = young plant al Osmundaregtlis, L. C- Ieaf of mature plant of Osmunda regalis. (From Engler and Prantl, Nat. Pflanzenfam.) In the Osmundaceae this results in the formation of the broad protective leaf-base. In Osmunda the wings are traceable as continuous down to the iSee Phil. Trans., 1884, p. 573-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan and Co. , Ltd.
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