120 



THE FERN BULLETIN 



sperm are so far apart that they do not even belong to 

 the same generation, but because Darwin once 

 wrongly used th term fertilization all loyal Britons 

 continued to use it. Whether a fern springs from a 

 seed or spore is of no particular significance to the 

 collector, but if the processes intervening between asex- 

 ual spore and fertilized egg are to be explained at all, 

 it is just as well to have the matter right, and we re- 

 peat that neither spermj nor pollen grains ever " fertil- 

 ize a seed." 



INDEX TO RECENT LITERATURE. 



Readers are requested to call our attention to any 

 errors in, or omissions from this list. 



Clute, W. N. Rare Forms of Ferns. — XL A 

 Forked Ebony Fern, illust. Fern Bulletin Jl. 1909. 

 A plant with five forked fronds reported from North 

 Carolina and named A. ebeneum f. furcatum. 



Clute, W. N. The Dzcarf Spleenwort, illust. Ameri- 

 can Botanist, Ag. 1909. — Reprint. 



Coker, W. C. Ly co podium adpressum forma Poly- 

 clavatum from South Carolina, illust. Fern Bulle- 

 tin Jl. 1909. — This form reported in abundance near 

 Flartsville and figures of some of the most remark- 

 able given. 



' Dutton, D. L. Osmunda cinnamomea forma an- 

 gusta. Fern Bulletin Jl. 1909. — Further notes on 

 the range of this form. 



Marquette, W. Concerning the Organization of 

 the Spore Mother-cells of Marsilia quadrifolia, illus- 

 trated. Transactions of the Wisconsin Academy of 

 Science, Ap. 1908. 



