20A. NATURAL HISTORY BULLETIN. 



are typical, while others, and those from Greytown are the 

 var. salicifolium Willd. 1 The relative size and form of the 

 fertile and sterile fronds are so variable, however, that the 

 varietal character has but little value. 



Not heretofore specifically reported from Nicaragua, though 

 listed from Panama and Guatemala. 



l6. P. CRASSIFOLIUM L. 



Linn., Syst. Nat., vol. n, p. 691 ; Swz., Syn. Fil., p. 27; Presl, Rel. Haenk., 

 p. 20; Lieb., Mex. Breg., p. 41; Mett., Fil. Hort. Bot. Lip., p. 37, pi. xx, 

 figs. 5, 6: Mett., Ub. Ein. Farng., pt. 1, p. 109; Eaton, Fil. Wr. et Fend., 

 p. 200; Hook., Sp. Fil., vol. v, p. 62; Hook, and Bak., Syn. Fil., p. 360; 

 Hemsl., Biol. Cent. Am., vol. Ill, p. 656; Bak., Biol. Cent. Am., vol. iv, 

 p. 116. 



Phymatodes crassifolia Presl, Tent. Pter., p. 197, pi. viii, rig. 9; Bom. et 

 Ch., Fil., p. 232. 



Pleuriditim crassifolium L., Smith, Hist. Fil., p. 95; Smith, Ferns, Br. and 

 For., p. 95. 



Common on trees near Castillo, Greytown, and Camp 

 Menocal. 



The fronds vary from 9^ to 25 inches in length, and from 

 1 to 3^ inches in width. Some of the fronds are quite sessile. 

 The apex varies from broadly rounded to abruptly and nar- 

 rowly acuminate. The sori are in 4 to 10 rows on each side of 

 the midrib, and in the narrower, very obtuse forms, they are 

 closely crowded. A few fronds have obscure lobes toward 

 the apex. 



Not heretofore recorded from Nicaragua, the nearest report- 

 ed station being Panama. 



t 

 Reported Species. 



P. attenuatum H. B. K. 



Fourn., Bull. Soc. Bot. Fr., vol. xvn, p. 237, from Granada; Fourn., Ser- 

 tum Nic, p. 251, without locality; Hemsl., Biol. Cent. Am., vol. in, p. 

 655, without locality. 



P. cardiophyllum (Presl). 



Fourn., Sertum Nic, p. 252 (as Craspedaria). 



Under the name C. cardiophylla Fournier reports a Poly- 



1 See Hook, and Bak., Syn. Fil., p. 357. 



