INDEX TO RECENT LITERATURE. 



Readers are requested to call our attention to any 

 errors in, or omissions from this list. 

 Benedict, R. C. Studies in the Ophioglossaceae. — 



77. Torreya My. 1908. — A descriptive key to the 



North American species of Botrychium. 

 Bigelow, H. C. The forms of Onoclca sensibilis 



Fern Bulletin Jl. 1907. 

 Clute, W. N. A Pedate Bracken. Illust. Fern 



Bulletin Ap. 1908. — Doryopteris pedata figured and 



discussed. 



Clute, W. N. Botrychiums in Sand. Fern Bul- 

 letin, Jl. 1907. 



Clute, W. N. Cash for Evergreens. Fern Bulletin 

 Jl. 1907. — Note on the use of ferns and other ever 

 greens in the trade. 



Clute, W. N. Check-list of the North American 

 Fenizcorts. Fern Bulletin Ap. 1908. — Completion 

 of this list. 



Clute. W. N. Nephrodiiun patens and N. mo lie. 

 Illust. Fern Bulletin, Ap. 1908. — The differences 

 between these two discussed and pinnules illustrated. 



Clute, W. N. Nezc Station for a Rare Florida Fern 

 Fern Bulletin, Ap. 1908. — The occurrence of a col- 

 ony of Hypolepis repens at Lake Charm, Florida, 

 recorded. 



Clute, W. N. On Some New Zealand Ferns. Fern 

 Bulletin. Ap. 1908. — Notes on 20 species collected 

 by George E. Smith. 



Clute, W. N. Rare Forms of Ferns. — IV. A bi- 

 pinnalHid Christmas Fern. Illust. Fern Bulletin, 

 Jl. 1907. — Polystichum acrostichoides f. bipinnatifi- 

 dum named and figured. 



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