THE GAMETOPHYTE GENERATION OF THE PSILOTA.CEHL 
113 
Boodle, L. A., “Secondary Tracheids in Psilotum,” New Phytologist, Feb. 1904. 
Boodle, L. A., “On the Occurrence of Secondary Xylems in Psilotum ,” Ann. Bot., No. 71, p. 505, 1904. 
Bower, F. 0., “ Studies in the Morphology of Spore-producing Members, Equisetineae and Lycopodineae,” 
Phil. Trans., 1894. 
Bower, F. 0., “General Comparisons and Conclusions,” Phil. Trans., 1903. 
Bower, F. O., The Origin of a Land Flora, Macmillan & Co., London, 1908. 
Bruchmann, H., Ueber die Prothallien und die Keimpflanze mehrerer europaisclher Lycopodien, Gotba, 1898. 
Bruchmann, H., “Ueber das Prothallium und die Keimpflanze von Ophioglossurn vulgatum,” Bot. Zcit., 
lxii, p. 227, 1904. 
Campbell, D. H., Mosses and Ferns, London, 1913. 
Darnell-Smith, G. P., “The Prothallus of Psilotum ,” Trans. Roy. Soc. Edin., 1916. 
Ford, S. O., “The Anatomy of Psilotum triquetrum ,” Ann. Bot., vol.' xviii, No. 72, p. 589, 1904. 
Jeffrey, E. C., “ The Structure and Development of the Stem in Pteridophyta and Gymnosperms,” Phil. 
Trans. Roy. Soc., 1902. 
Jeffrey, E. C., “ The Gametophyte of Botrychium virginiunum ,” Proc. Gan. Inst., v, 1898. 
Lang, W. H., “ On the Prothalli of Ophioglossurn pendulum, Helminthostachys zeylanica, and Psilotum ,” 
Proc. Roy. Soc., 1901. 
Lang, W. H., “On the Prothallus provisionally referred to Psilotum ,” Ann. Bot., vol. xviii, 1904. 
Lawson, A. A., “The Prothallus of Tmesipteris ,” Trans. Roy. Soc. Edin., 1916. 
Lignier, O., “Equis4tales et Sphenopliyllales : leur origine Filicineenne commune,” Bull, de la Soc. Linn, de 
Normandie, s4r. 5, vol. vii, Caen, 1903. 
Scott, D. H., Studies in' Fossil Botany, London, 1900. 
Scott, D. H., “ On Cheirostrobus , a new type of Fossil Cone from the Lower Carboniferous Strata,” Phil. 
Trans., 1897. 
Seward, A. C., Fossil Plants, Cambridge University Press, 1910. 
Sykes, M. G., “ The Anatomy and Morphology of Tmesipteris,'’ Ann. Bot., vol. xxii, No. 85, p. 63, 1908. 
Thomas, A. W. P., “The Affinities of Tmesipteris with the Spbenophyllales,” Proc. Roy. Soc., vol. Ixix, 
1902. 
Treub, M., “Etudes sur les Lycopodiacees,” Ann. du Jard. Bot. de Buitenz.org, 1886. 
Vaughan Jennings, A., and Hall, K. M., “Notes on the Structure of Tmesipteris ,” Proc. Roy. Irish 
Acad., 1891. 
Whitelegge, T., “Notes and Exhibits,” Proc. Linn. Soc. New South Wales, April 26, 1916. 
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