INDEX TO RECENT LITERATURE. 



Readers are requested to call our attention to any 

 omissions from or errors in this list. 



Clute, W. N. Rare Forms of Femworts. — XIV. 

 Some variations of Polypodium, illust. Fern Bullet n. 

 Ap. 1910. 



Clute, \Y. N. The Philippine Pedatc Bracken, 

 illust. Fern Bulletin Ap. 1910. 



Dodge, R. Variations in Botrychhtm ramosum. 

 Fern Bulletin, Ap. 1910. — Relationships of this spec es 

 to the other small Botrychiums discussed. 



Druery, C. T. Naming of Fern Varieties. Fern 

 Bulletin Ap. 1910. — Reprinted from British Fern Ga- 

 zette. 



Hopkins, L. S. New Varieties of Common Ferns. 

 illust. Ohio Naturalist Je. 1910. — A form of Adian- 

 tum pe datum named laciniatum and one of Cystopteris 

 fragilis named cristata. 



Hoyt, \Y. D. Physiological Aspects of Fertiliza- 

 tion and Hybridization m Ferns, illust. Botanical Ga- 

 zette, My. 1910. — A detailed account of numerous 

 experiments in crossing ferns. 



Nieuwland, J. A. Dryopteris a Synonym, illust. 

 Midland Naturalist, Je. 1910. — Thelypteris Schmi- 

 del reported to ante-date Dryopteris. 



Poyser, W. A. Notes on Local Ferns, Bartonia. F. 

 1910. 



Prescott, A. Juvenile Ferns, Fern Bulletin, Ap. 

 1910. 



Pteridographia. Fern Bulletin Ap. 1910 — An ab- 

 errant Osmnnda; Fertile Spikes of Botrychhtm ; Forms 

 of Botrychinm obliqintm; Forms of Lycopodium cla- 

 vatum; Polystichnm acrostichoides multifidum ; Sto- 

 lons of Nephrolepis. 



95 



