THE FERNS OF NICARAGUA. 183 



which are also densely covered with prostrate resin-rods. The 

 margins of the frond are ciliated. The sori appear to be 

 nearly marginal because the edges of the segments are more 

 or less reflexed , 



The fronds (including the stipe) reach a total length of 4 

 feet. 



Rather rare in low grounds in deep woods near Castillo. 



3. P. crenata (Szuartz) Mett. 



Polvpodium c re nat inn, Swartz, Fl. Ind. Occ, p. 166; Swz., Svn. Fil., p. 37; 

 Hook., Fil. Ex., pi. lxxxiv; Hook., Sp. Fil., vol. v, p. 2; Roth., Les 

 Foug., vol. 11, p. 18, pi 111; Hook, and Bak., Svn. Fil., p. 315: Hems!., 

 Biol. Cent. Am., vol. 111, p. 656; Hitch., PI. Bah., p. 156. 



Goniopteris crenata Presl, Tent. Pter., p. 1S3. pi. VII, fig. 10: Smith, Hist. 

 Fil., p. 192: Smith, Ferns, Br. and For., p. 13^. 



Typical, rather hairy, specimens were common among 

 weeds on a banana plantation near Castillo. A smoother 

 form, with live pairs of lateral pinnae, was collected in waste 

 ground at Boca del Rama. 



Reported from Chontales by Fournier. 



4. P. tetragona {Swartz} Mett. PI. xix. Figs. 3. 4. 



Mett., Fil. Hort. Bot. Lip., p. 84; Mett., Ub. Ein. Farng., pt. iv, p. 22: Eaton 



Fil. Wr. et Fend., p. 207: Fourn., Sertum Nic, p. 253. 

 Poly podium tetragonum Swz., Fl. Ind. Occ, p. 1760; Swz., Syn. Fil., p 37; 



Lieb., Mex. Breg., p. 59; Hook., Sp. Fil., vol. v, p. 3; Hook, and Bak., 



Syn. Fil., p. 317; Hemsl., Biol. Cent. Am., vol. in, p. 670; Hitch., PI. 



Bah., p. 156. 

 Polvpodium megalodus Schk., — Presl, Rel. Haenk., p. 24. 

 Phegopteris megalodus, Mett., Ub. Ein. Farng., pt. IV, p. 24: Eaton, Fil. 



Wr. et Fend., p. 207. 

 Goniopteris nicgalodes Presl, — Smith, Hist. Fil., p. 192; Smith, Ferns, Br. 



and For., p. 13S. 

 Goniopteris tetragona Swz., — Smith, Hist. Fil., p. 192; Smith, Ferns, Br. 



and For., p. 138; Fourn., Bull. Soc. Bot. Fr., vol. xvii, p. 236. 

 Polvpodium tetragonum var. megalodum (Schk.) Bak., Hitch., PI. Bah., p. 156. 



In his paper •' On the Recent Sxnonymy of Brazilian Ferns' 1 '' 

 Baker substitutes Polypodium androgynum Poir. for P. tetra- 

 gonum. In the second edition of •• Synopsis Filicitm.'' pub- 

 lished in the same year, the following statement is reproduced 



IV— 2 o 



