THE FERNS OF NICARAGUA. !8i 



The specimens are nearly typical, but have the entire stipe 

 and a part of the rachis fibrillose with long narrow, acuminate, 

 light-brown scales. Most of the pinnse are cordate on the 

 lower, and truncate on the upper side at the base. Forms 

 which are truncate, cordate or rounded on both sides also 

 occur. Most of the pinnae are distinctly crenato-repand, but 

 some are nearly entire. 



Reported from Granada and Chontales by Fournier (as 

 Asftidium), and by Hemsley. 



2. A. TRIFOLIATUM (Z.) SzVCirtz. 



Swz., Syn. Fil., p. 43; Presl, Tent. Pter., p. 88, pi. 11, fig. 27; Lieb., Mex. 

 Breg., p. 125; Mett, Fil. Hort. Bot. Lip., p. 95, pi. xxii, figs. 10, 11, 12; 

 Mett, Ub. Ein. Farng., pt. iv, p. 126; Eaton, Fil. Wr. et Fend., p. 211; 

 Hook., Sp. Fil., vol. iv, p. 45; Roth., Les Foug., vol. 1, p. 177, pi. xxx; 

 Hook, and Bak., Syn. Fil., p. 258; Smith, Ferns, Br. and For., p. 145; 

 Underwood, Our Nat. Ferns and All., p. 102; Chapm., Fl. So. St., p. 

 671 ; Hemsl., Biol. Cent Am., vol. in, p. 643; Bak., Biol. Cent. Am., vol. 

 iv, p. 116; Bak., Jour. Bot., vol. xxn, p. 363 (the two latter from Costa 

 Rica). 

 Polypodium trifoliatum L., Syst. Nat., vol. n, p. 692. 



Bathmium trifoliatum Link, (and var. heracleifolium Fee). — Fourn., Sertum 

 Nic, p. 256. 



Quite rare near Castillo. One specimen, collected in deep 

 woods, has the lower lobes free, the frond being compound, 

 and all the lobes are again deeply lobed. The remaining 

 specimens, which were collected on the banks of the San Juan 

 River below Castillo, have simple fronds which are deeply 

 three-lobed. The lobes are almost entire, the basal pair being 

 only slightly lobed below. The fronds are small, measuring 

 as follows: stipe 2>H to 4*^ inches; frond 4^ to $y 2 inches 

 long, and 33^ to 4^ inches wide. Habit, terrestrial. 



Reported from Chontales by Fournier (as Bathmium, with 

 var.), and by Hemsley. 



Reported Species. 

 A. meniscioides Willd. 



Fourn., Sertum Nic, p. 256, (as Cyclodium)\ Hemsl., Biol. Cent. Am., vol. 

 in, p. 643; both from Chontales. 



A. nicaraguense (Fourn.) Bak. 



Fourn., Sertum Nic, p, 256 (as Bathmium); Hook, and Bak., Syn. Fil., p. 

 493; Hemsl., Biol. Cent. Am., vol. 111, p. 643; all from Chontales. 



