. Catalogue of the Mesozoic plants in the Department of Geology, British Museum (Natural History) [Part I-II] The Wealden flora. Paleobotany; Paleobotany. 128 I^NIOPTEEIS. S.—Tseniopteris Dawsoni, sp. nov. Type. Portions of simple fronds. In tte British. Museum. Fig. 15. In some of the Ttsniopteru specimens from the Sussex beds there is a form of venation which clearly marks them off from the previous species. I propose to give expression to this dis- tinctive character by the institution of a new species named after Mr. Charles Dawson, whose name is already well known in connection vnth "
. Catalogue of the Mesozoic plants in the Department of Geology, British Museum (Natural History) [Part I-II] The Wealden flora. Paleobotany; Paleobotany. 128 I^NIOPTEEIS. S.—Tseniopteris Dawsoni, sp. nov. Type. Portions of simple fronds. In tte British. Museum. Fig. 15. In some of the Ttsniopteru specimens from the Sussex beds there is a form of venation which clearly marks them off from the previous species. I propose to give expression to this dis- tinctive character by the institution of a new species named after Mr. Charles Dawson, whose name is already well known in connection vnth "Wealden palseontology. It is quite possible that this species may eventually have to be regarded as another variety of T. Beyriehii. Frond simple, lanceolate, midrib prominent with closely arranged lateral veins given off at an acute angle and passing straight to the margin without curving or branching. The fragment figured by Ettingshausen as T. %oehingiana' shows oblique lateral veins, but these spring from the midrib at a more acute angle and have a distinctly curved course, thus differing from T. Bawsoni. As Schenk has pointed out, the fragment on. Fio. 15 (V. 2729). Fragment of frond of Taniopteris Bawsoni, sp. nov. which Ettingshausen's species was founded is in all probability part of a Neuropteris pinnule ;'' at all events it has little claim to be placed in the genus Tceniopteris, and none whatever to represent a new species. V. 2729. Woodcut, Fig. 15. On the same piece of rock there is a specimen showing the gradually tapering apical portion of a frond. • Abt. geol. Eeichs. vol. i. Abth. iii. No. 2, pi. iii. fig. 19. " Palajontographica, vol. xix. p. 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 British Museum (Natural History). Dept. of Geology; Seward, A. C. (Albert Charle
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