—20 — 



readjustment is necessary in order to make room for it, 

 and the following arrangement is submitted: 



Euaneimia : sterile and fertile portions on the same 

 frond, veins free. 



Paniculatae. 



* Sporophyte variable in size and cutting, but all with 

 distinct, long-stalked elongated sporophylls, embracing 

 species i to 18 of " Synopsis Filicum " (H. & B., 1874). 



Non Paniculatae. 



** Sporophyte small, sporophylls without stalks, con- 

 sisting of the changed lowermost pair of pinnae: — 



Aneimia Braxdegeea Davenport, n. sp. 

 Dedicated to Townshend Stith Brandegee. 



Sporophyte small, about 2 inches high, tufted; fronds 

 equally divided, the lamina and stipes being of nearly 

 equal length : la mi nee oblong-ovate, approximately 1^ in. 

 long, J wide in the broadest part, the upper half obliquely 

 ■ pinnatifid. the lower half pinnate with oblong pinnati- 

 fid pinnae, the uppermost pair sessile, the second pair 

 slightly stalked, the lowermost pair pinnately branched 

 and transformed into distinct sporophylls. This being 

 its distinctive character. Sporangia ovoid, or pyriform, 

 reticulated, the cap, under the microscope, bright orange- 

 scarlet. Spores roundish-tetrahedral, ribbed. Texture 

 herbaceous, venation flabellate, whole plant hirsute. 



Habitat: Face of perpendicular cliffs. Cerro Colo- 

 rado, vicinity of Culiacan, Sinaloa, Mexico. T. S. Bran- 

 degee, Nov. 5, 1904. 



This unique fern is apparently rare. A small colony of 

 some two dozen plants only was found occupying a space 

 scarcely more than a foot square in about an inch of soil 

 six feet from the base of the cliff on which they grew. 

 The plant from which Mr. Faxon's drawing was made 

 has been deposited in the Gray Herbarium at Cambridge 

 as the type. 



I have followed the orthography adopted by Prof. 

 Daniel C. Eaton, whose fine reputation as a Greek scholar 



