THE FERNS OF NICARAGUA. 



155 



the rachis. The spines diminish in number upward, and the 

 terminal portions of the rachises are tomentose only. On the 

 main rachis the tomentum is restricted to the groove on the 

 upper side. 



No mention is made of the spines in any of the accessible 

 descriptions, though Baker 1 says that the rachises are '• slightly 

 asperous." 



The white jointed hairs are scattered over the lower surface 

 of the frond, though most abundant along the midribs. 



Hooker's figures in all respects accurately represent the 

 specimens in the collection. The latter, however, are more 

 delicate than most of the specimens examined by the author, 

 resembling closely Pringle's Mexican specimens in the Shaw 

 Herbarium at St. Louis. Not heretofore reported from 

 Nicaragua, though listed by Baker {ibid.) from neighboring 

 Costa Rica. 



Reported Species. 

 D. cicutaria Swartz. 



Hemsl., Biol. Cent. Am., vol. m,p. 596, without exact locality. 



Dennstcedtia ordinata Fourn., Sertum Nic, p. 260, without exact locality. 



Family V. BLECHNE^. 



Genus LO MARIA Willd. 



This genus is intermediate between Pteridecs and Blcclmum. 

 and has quite as good a right to a place in the former. No 

 specimens were collected, but note is made of the following 



Reported Species. 

 Z,. onocleoides Spreng. 



Fourn., Sertum Nic, p. 25S; Hemsl., Biol. Cent. Am., vol. ill, p. 626; both 

 from Chontales. 



Genus BLECHNUM Linn. 

 1. B. longifolium H. B. K. PI. xiii, Figs. 3. 4. 



Mett., Fil. Hort. Bot. Lip, p. 62; Eaton, Fil. Wr. et Fend., p. 204; Hook., 

 1 Hook, and Bak., Syn. Fil., p. 53, note under D. rubiginosa. 



