INDEX TO RECENT LITERATURE. 



Readers are requested to call our attention to errors 

 in, or omissions from, this list. 



Benedict, R, C Notes on Some Ferns Collected Near 

 Orange, N. J. Torreya, July, 1907. 



Burlingame, L. L. The Sporangia of the Ophioglos- 

 sales. illust. Botanical Gazette, July, 1907. — A com- 

 parison of structure in the Sporangia of Ophioglossium, 

 Helminthostachys and Botrychium. 



Clute, W. N. Absurdity in Nomenclature. Fern Bul- 

 letin, April, 1907. 



Clute, W. N. A Check-List of the North American 

 Fernworts. Fern Bulletin, April, 1907. A Continuation. 



Clute, W. N. Edible Ferns. Fern Bulletin, April, 1907. 



Clute, W. N. Fall Fruiting of the Cinnamon Fern. 

 Fern Bulletin, April, 1907. 



Clute, W. N. Ferns and Drouth. Fern Bulletin, April, 

 1907. 



Clute, W. N. Ferns and Lime. Fern Bulletin, April, 

 1907. 



Clute, W. N. Fossil Ferns are Rare. Fern Bulletin, 

 April, 1907. 



Clute, W. N. Habitats of Cystopteris Fragilis. Fern 

 Bulletin, April, 1907 — Recorded as growing habitually 

 on the ground in the Middle West. 



Clute, W. N. Onoclea Sensibilis in the South. Fern 

 Bulletin, April, 1907. — Range Extended to Mobile. 



Clute, W. N. Rare Forms of Ferns. — 777. An Aber- 

 rant Pteris aquilina Pseudocaudata. Illust. Fern Bul- 

 letin, April, 1907. 



Clute, W. N. The Boulder Fern and Water. Fern 

 Bulletin, April, 1907. 



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