i74 



NATURAL HISTORY BULLETIN. 



rium, and with the descriptions cited, leaves no doubt of the 

 correctness of the determination. 



Reported from Realejo by Hooker [ibid.'), from Ometepe 

 by Fournier (as var. serratum), and from Chontales and 

 Ometepe by Hemsley (as fialulum). 



3. N. sph^erocarpum (Fee) Hook. PI. xvm, Fig 6. 



Hook., Sp. Fil., vol. iv, p. 139; Hook, and Bak., Syn. Fil., p. 277; Hemsl., 

 Biol. Cent. Am., vol. in, p. 650. 

 Lastrea athyrioides Lieb., Mex. Breg., p. 122. 



Weaker and more delicate than JV. mexicanum, and with a 

 very distinct, membranous, reniform indusium. Otherwise 

 like that species, with which it may have to be united. 



Found sparingly in the deep woods near Moyogalpa, on 

 Ometepe. 



Not heretofore reported from Nicaragua. It is possible, 

 however, that Fournier's A. mexicanum var. serratum 1 is this 

 form. 



4. N. karwinskyanum (Mett.) Bak. PL xvm, Figs. 7, 8. 



Hook and Bak., Syn. Fil., p. 279; Hemsl., Biol. Cent. Am., vol. 111, p. 647. 

 Lastrea mexicana Lieb. (tion. Presl), Mex. Breg., p. 120. 

 Aspidium karwinskyanum Mett., Ub. Ein. Farng., pt. iv, p. 59; Fourn., 



Sertum Nic, p. 255. 

 Nephvodium sfhcerocarpum var. glandulosum Hook., Sp. Fil., vol. iv, p. 139. 



A form which was quite common in the rich soil of the 

 lower deep woods near Castillo is referred to this species with 

 some doubt. Baker's description in Synopsis Filicum agrees 

 with the specimens in the collection in dimensions, division, 

 form of the frond, surface, and character of the indusium, but 

 the lobes are acutely instead of " bluntly-lobed." J. Donnell 

 Smith's specimen from Guatemala in the Shaw Herbarium is 

 like the Castillo specimens except that it has somewhat blunter 

 lobes, and the indusium is more hairy over the entire surface, 

 that of the latter form being but sparsely hairy on the surface 

 and margin, but with an abundance of resin-dots. 



But for the much smaller dimensions of the fronds, which 



J See under preceding species. 



