. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. 276. Diagrammatic representation of the end of a rhizome of Kaulfussin. 71.' = wings of stipule; (v,// = transverse commissure. (After Guynnc- like plants, of MarattiaceOUS affinity, \ aughan.) L J but of more aborescent habit than the living Marattiaceae, existed in Palaeozoic times, a conclusion which is borne out by the study of the leaves and A, young sporophyte of Danaea simplicifolia still attached to the gametophyte, /•*. x 3. B, an older sporophyte of the same species. C, gam
. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. 276. Diagrammatic representation of the end of a rhizome of Kaulfussin. 71.' = wings of stipule; (v,// = transverse commissure. (After Guynnc- like plants, of MarattiaceOUS affinity, \ aughan.) L J but of more aborescent habit than the living Marattiaceae, existed in Palaeozoic times, a conclusion which is borne out by the study of the leaves and A, young sporophyte of Danaea simplicifolia still attached to the gametophyte, /•*. x 3. B, an older sporophyte of the same species. C, gametophyte of Angiopteris evecta with young sporophyte. (A, B, after ftrebner; C, after Farmer, from Campbell's and Ferns.) The latter in the modern genera are always intra-marginal, on the lower surface of the leaf: the sori are distinct, seated each upon a vein. ' Zeiller, Elements, \>. 120,. 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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