THE FERNS OF NICARAGUA. 



159 



4. A. CULTRIFOLIUM L. PI. XIV, FigS. 2-4. 



Linn., Syst. Nat., vol. 11, p. 690; Swz., Syn. Fil., p. 78; Mett., Ub. Ein. Farng., 

 pt. vi, p. 98; Hook., Sp. Fil., vol. 111, p. no; Hook, and Bak., Syn. Fil., 

 p. 203; Hemsl , Biol. Cent. Am., vol. in, p. 632; Bak., Jour. Bot., vol., 

 xxn, p. 362 (from Costa Rica). 



There is considerable variation in the form and length of 

 the pinnae, and in the character of the serrations, the teeth in 

 some specimens being simple, in others distinctly birld. These 

 differences are shown in the figures. 



The sori in most of the fronds are simple, a few pinnce onlv 

 showing the diplazioid character. 



The stipes are tufted, from a short, erect rootstock one- 

 eighth of an inch in diameter. The rootstock appears thicker, 

 however, because it is covered with the bases of old stipes. 



Common in rich soil in deep woods near Castillo. 



Not heretofore reported from Nicaragua. 



5. A. serra L. and F. PI. xiv, Figs. 5, 6. 



Lieb., Mex. Breg., p. 94; Mett., Fil. Hort. Bot. Lip., p. 76; Mett., lib. Ein. 



Farng., pt. vi, p. 151; Eaton, Fil. VVr. et Fend., p. 205: Hook., Sp. Fil., 



vol. in, p. 154; Hook, and Bak., Syn. Fil., p. 206; Hemsl., Biol. Cent. 



Am., vol, in, p. 63S; Bak., Biol. Cent. Am., vol. IV, p. 116 (from Costa 



Rica). 

 A. pazppigii Presl, Tent. Pter., p. 106, pi. in, fig. 21. 

 A. insigne Lieb., Mex. Breg., p. 94. 



Tvpical specimens were not rare on trunks of trees near 

 Camp Menocal, though but few were collected. 



The lower pinnae are sometimes auricled at the base on the 

 upper side. The rachis is usually at first covered with small, 

 linear, dark-brown, appressed, deciduous scales. 



Reported from Realejo by Hooker 1 and Hemsley, and 

 from Nicaragua without locality by Hemsley. 



6. A. auritum Swartz. PI. xiv, Figs. 7, 8. 



Swz., FI. Ind. Oca, p. 1616; Swz., Syn. Fil., p. 78; Presl, Rel. Haenk., p. 43; 

 Lieb., Mex. Breg., p. 96; Mett., Fil. Hort. Bot. Lip., p. 73; Mett., Ub. 

 Ein. Farng., pt. vi, p. 103; Eaton, Fil. Wr. et Fend., p. 206; Hook., Sp. 

 Fil., vol. in, p. 178; Roth., Les Foug., vol. 1, p. 167, pi. xxvi; Bed. 



1 Sp. Fil., vol. in, p. 155. 



