. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. 620 FILICALES types of leaf, to which that of Dipteris is related by D. Lobbiana; but from this simple narrow-leaved type, with its single row of sori on either side of the midrib, the broader-leaved Dipteris has broken away as its leaf- area enlarged, and the sori have been spread over the extended surface, while the absence of their individuality gives the key to the way in which. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabili
. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. 620 FILICALES types of leaf, to which that of Dipteris is related by D. Lobbiana; but from this simple narrow-leaved type, with its single row of sori on either side of the midrib, the broader-leaved Dipteris has broken away as its leaf- area enlarged, and the sori have been spread over the extended surface, while the absence of their individuality gives the key to the way in which. 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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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondonmacmillanand
