. On new plants from the Erian and Carboniferous [microform] : and on the characters and affinities of paleozoic gymnosperms. Paleobotany; Paléobotanique. 18 and more resemble those of the genus Voltzia. They have apparently three nerves, but the lateral ones may be resin-vessels. Mr. Bain also finds at St. Peter's Island, with the bran- ches and leaves of Tylodendron, the fruits or seeds represen- ted in Fig. 6. They appear to be wedge-shaped and in fours, and an involucre similai* to that in Fig. C. accompa- nies them, and is supposed to have oelonged to them, or possibly to male flowers of
. On new plants from the Erian and Carboniferous [microform] : and on the characters and affinities of paleozoic gymnosperms. Paleobotany; Paléobotanique. 18 and more resemble those of the genus Voltzia. They have apparently three nerves, but the lateral ones may be resin-vessels. Mr. Bain also finds at St. Peter's Island, with the bran- ches and leaves of Tylodendron, the fruits or seeds represen- ted in Fig. 6. They appear to be wedge-shaped and in fours, and an involucre similai* to that in Fig. C. accompa- nies them, and is supposed to have oelonged to them, or possibly to male flowers of the. same species. Neither of these organs have been found actually attached to the bran- ches. If these fruits belong to Tylodendron they would in- dicate taxine affinities, and they somewhat resemble the curious coniferous fruits from the Tertiary of Australia. known as Fig. 6. Fruit and bracts of Tylodendron. (a) Fruit (fe) single seed, (c) bracts. (Drawn by Mr. Bain.) Stems having the markings of Tylodendron occur in the Permo-Carboniferous of Cape John in Nova Scotia, and at that place there are also obscure Yoltzia-like leaves some- what resembling those of the Prince Edward Island specioens. If we connect the trunks, branches, leaves and fruits above referred to, we can now extend the description given by Weiss much beyond that given to his T. speciosum, and should perhaps give a new name to the form from Prince Edward Island, more especially as it differs slightly both in markings and structure from that described by Weiss. Tylodendron Baini, Exterior of stem with elongated leaf-bases, truncate above, obtusely pointed below. Pith-cylinder and ligneous surface. 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 Dawson, J. W. (John William), Sir, 1820-1899. [Montreal? : s. n.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpaleobo, bookyear1890
