347 
Phylloglossum Drummondii. 
3. This reduction has resulted in the complete suppression of the 
megaphyllous leaves, a condition comparable with that presented by Ophio- 
glossum simplex . 
4. The similarity in respective habits and structure of Phylloglossum 
and Isoetes go to support the Lycopodinean affinities of the latter. 
5. Phylloglossum , far from being a primitive form, is highly specialized. 
I wish to express my sincere thanks to Mr. T. G. Hill, not only for 
placing at my disposal his preparations, which were made from plants 
brought from Australia by Professor J. P. Hill, of University College, but 
also for his very valuable advice and criticism throughout the investigation. 
It should be stated that the present investigation was carried out in 
the Botanical Department of Goldsmiths’ College, University of London. 
Literature. 
1. Bower : Phylloglossum Drummondii. Phil. Trans. Roy. Soc., London, 18S5, Part ii, p. 665. 
2 . -: Studies in the Morphology of Spore-producing Members, I. Ibid., 1894, p. 473. 
3 . -: Ophioglossum simplex, Ridley. Ann. Bot., xviii, p. 205. 1904. 
4 . -: The Origin of a Land Flora, London, 1908. 
5 . Bertrand: Phylloglossum. Archives Botaniques du Nord de la France, September, 1884. 
6. Cheeseman, T. F. : New Zealand Flora, Wellington, 1906, p. 1033. 
7 . Gwynne-Vaughan : Remarks upon the Nature of the Stele of Equisetum. Rep. Brit. Ass., 
Glasgow, 1901, p. 850. 
8. Jeffrey, E. C.: Are there foliar gaps in the Lycopsida? Bot. Gaz., Oct. 1908. 
9 . Mettenius: Ueber Phylloglossum. Bot. Zeit., March 29, 1867. 
10 . Robertson : The ‘Droppers’ of Tulipa and Erythronium. Ann. Bot., xx, p. 429. 1906. 
11 . Sykes : Notes on the Morphology of the Sporangium-bearing organs of the genus Lycopodium. 
New Phytologist, vii, 1908. 
12 . Treub : Etudes sur les Lycopodiaceds. Annales du Jardin botanique de Buitenzorg, viii, p. 1 
(1890). 
13 . Thomas : Preliminary Account of the Prothallium of Phylloglossum. Proc. Roy. Soc., lxix, 
p. 285. 1901. 
