^{page 5 note *} Morph. u. Biol. d. Algen, p. 637.

^{page 5 note †} See Lang, , “Discussion on Alternation,” New Phyt., vol. viii, p. 104.Google Scholar Sec. K, Brit. Assn., Report, 1915, Manchester.

^{page 7 note *} Compare Land Flora, figs. 262, 266.

^{page 7 note †} Przibram, quoted by Doncaster, Cytology, p. 40.

^{page 9 note *} Ann. of. Bot., vol. xxviii, p. 35

^{page 12 note *} Ann. of Bot., vol. xxviii, p. 35.

^{page 12 note †} Land Flora, chap. xlii.

^{page 12 note ‡} British Association Report, 1915, p. 707.

^{page 15 note *} Lyon, , Bot. Gaz., Dec. 1905, p. 455CrossRefGoogle Scholar; Land Flora, p. 471; Campbell, , Ann. of Bot., 1921, p. 141.CrossRefGoogle Scholar

^{page 15 note †} Land Flora, fig. 264.

^{page 15 note ‡} Lang, , Ann. of Bot., 1902, p. 23.CrossRefGoogle Scholar

^{page 16 note *} Lang, , Phil. Trans., Vol. cxc, 1898.Google Scholar

^{page 17 note *} I agree with von Goebel's remarks explaining on a normal footing the curious state ascribed by Bruchmann to the embryos of Selaginella Kraussiana, Poulteri, and Galeottii. Organographie, ii Aufl., Teil ii, Heft 2, p. 989.

^{page 18 note *} Compare Land Flora, figs. 261, 262.

^{page 19 note *} Compare Land Flora, fig. 260.

^{page 19 note †} Eusporangiate Ferns, p. 36.

^{page 19 note ‡} Compare Land Flora, fig. 214.

^{page 19 note §} Lawson, Trans. R. S. Edin., vols. li, part iii, p. 22; lii, part i, p. 4. Holloway, Trans. N. Z. Insl., vols. 1, p. 1; liii, p. 386.

^{page 21 note *} Sitz. der k. Akad. der Wiss. Wien, Bd. lxxvii, 1878.

^{page 22 note *} Mosses and Ferns, p. 545.

^{page 23 note *} Hanstein's Abhandl., Heft iii, 1871.

^{page 23 note †} Unters. u. Selaginella spinulosa, Gotha, 1897: Flora, 1908, p. 12; 1912, p. 180; 1913, p. 237.

^{page 23 note ‡} Organographie, 1918, Teil ii, p. 987.

^{page 25 note *} Loc. cit., 1912, p. 191, fig. 9.

^{page 26 note *} Organographie, ii, p. 987.

^{page 26 note †} Von Goebel, Organographie, ii, p. 980.

^{page 29 note *} Bower, , Phil. Trans., 1884, part ii, p. 605.Google Scholar

^{page 29 note †} Land Flora, chap, xi, p. 141; also the writings of Lignier and Tansley.

^{page 32 note *} Q.J.M.S., vol. xxii, p. 295.

^{page 33 note *} Eusporangiate Ferns, p. 40.

^{page 33 note †} See von Goebel, , Organographie, Engl. ed., vol. ii, p. 234.Google Scholar

^{page 33 note ‡} Chauveaud, G., La constitution des plantes vasculaires révélée dans leur ontogenie, Payot et Cie, Paris 1921.Google ScholarBecquerel, , “La découverte de la Phyllorhize,” Rev. Gén. des Sciences, Feb. 28, 1922, p. 101.Google Scholar

^{page 34 note *} Loc. cit., p. 75, etc.