. Fossil plants : for students of botany and geology . Paleobotany. XXVIl] TAENIOPTEEIS 487 polygonal cells some of which are elongated at right angles to the surface of the lamina. A very similar form is described by Fontaine and White from the Permian of Virginia as T. Lescuriana^. It is futile to expect to be able to separate the numerous. Pio. 329. A. Taeniopteris vmltinervis, Weiss. (^ nat. size. After Zeiller.) B. T. multinervis. (Enlarged. After Zeiller.) C. Lesleya Delafondi. (x2. After Zeiller.) Taeniopteris leaves into well-defined species: all we can do is to group the specimens und
. Fossil plants : for students of botany and geology . Paleobotany. XXVIl] TAENIOPTEEIS 487 polygonal cells some of which are elongated at right angles to the surface of the lamina. A very similar form is described by Fontaine and White from the Permian of Virginia as T. Lescuriana^. It is futile to expect to be able to separate the numerous. Pio. 329. A. Taeniopteris vmltinervis, Weiss. (^ nat. size. After Zeiller.) B. T. multinervis. (Enlarged. After Zeiller.) C. Lesleya Delafondi. (x2. After Zeiller.) Taeniopteris leaves into well-defined species: all we can do is to group the specimens under diflFerent names, using as arti- ficial distinctions such characters as the shape of the leaf, the number of veins per centimetre, and the prominence of the rachis. Another Virginian species of Permian age described by Fontaine 1 Fontaine and White (80) PI. 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 Seward, A. C. (Albert Charles), 1863-1941. Cambridge : University Press
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
