. Devonian floras; a study of the origin of Cormophyta. Paleobotany -- Devonian. VI PTEROPSIDA 83 we have something different in the way of a fructification to anything known among Carboniferous plants. On the other hand, that of the Psilophytic genus Broggeria (Fig. 17, p. 35) has at least some superficial resemblance to that of Cephalopteris. In both cases these fructifications may well arise from the metamorphosis of a tuft of finely divided branclilets, and may. Fig. 47. Aphlebiae oi Pecopleris (Dacfy- loiheca) plutnosa, (Art.), from the Coal Measures, showing persistence of thalloid fohag
. Devonian floras; a study of the origin of Cormophyta. Paleobotany -- Devonian. VI PTEROPSIDA 83 we have something different in the way of a fructification to anything known among Carboniferous plants. On the other hand, that of the Psilophytic genus Broggeria (Fig. 17, p. 35) has at least some superficial resemblance to that of Cephalopteris. In both cases these fructifications may well arise from the metamorphosis of a tuft of finely divided branclilets, and may. Fig. 47. Aphlebiae oi Pecopleris (Dacfy- loiheca) plutnosa, (Art.), from the Coal Measures, showing persistence of thalloid fohage. After Zeiller's t^lem. Paleobot. (1900). be compared with those of Archaeopteris (Figs. 28, 2, p. 50 and especially Fig. 32, p. GO). It is thus clear that many of the earlier Pteropsida, like the Sphenopsida, retained a sub-thalloid type of foliage. This type further persisted among aphlebiae well into the Upper Carboni- ferous period. The aphlebiae of Pecopteris (Fig. 47) are a case in point and are of the Sphenopteridium type, whereas many 6—2. 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 Arber, E. A. Newell (Edward Alexander Newell), 1870-1918; Arber, Agnes Robertson, 1879-1960. Cambridge, The University Press
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