[682] Bower (00).
[683] For an account of the mechanism of spore-dispersal, see Goebel (05) p. 587; Atkinson (94); Leclerc du Sablon (85); and Bower (00).
[684] For a fuller account of recent ferns, see Engler and Prantl (02), Christ (97), Hooker and Baker (68), and Bower (00) (08).
[685] Prantl (81) Pl. VII. fig. 104, C; Zeiller (97) p. 215, figs. 7–10.
[686] Underwood (07), p. 243, has adopted Bernhardi’s genus Dicranopteris in place of Mertensia on the ground that the latter was used as early as 1793 for a Boraginaceous plant.
[687] Goebel (05) p. 318.
[688] Baker (88).
[689] Diels, in Engler and Prantl (02) pp. 343, 344.
[690] Compton (09).
[691] Copeland (08) p. 344.