THE FERNS OF NICARAGUA. 



117 



No pretense is therefore made that the list of Ferns herein 

 given is complete, even for the limited region under considera- 

 tion. The vicinity of Greytown is the most promising fern- 

 locality visited by the expedition, yet all the work in that 

 vicinity was done within one week, during the greater part of 

 which rain fell in torrents. 



A full account of the topography and the prevailing climatic 

 conditions of the region visited by the expedition has already 

 been given by the author. 1 



For convenience the localities and dates are here repeated: 

 Ft. San Carlos; at the outlet of Lake Nicaragua. January 

 ist~4th, 1893. 



Island of Ometepe, Lake Nicaragua. January 5th-Febru- 



ary 10th. 

 Castillo Viejo. February I2th-March 23rd. 



The La Juana and Los Sabalos Rivers are tributary 

 to the San Juan from the north. The La Juana east 

 of Castillo, the Los Sabalos west. 

 Greytown. March 25th to April 1st. 



Camp Menocal is about fourteen miles west of 

 Greytown. on the line of the proposed canal. Camp 

 Seven is between Camp Menocal and Greytown. 

 The Deseado River is a small stream which flows 

 from the Divide at the point where this is to be cut 

 by the canal toward Camp Menocal. The falls of 

 the Deseado are near the Divide. 

 Boca del Rama. April 4th and 5th. 



This is on Bluelields River (Rio Escondido) about 

 fortv miles from its mouth. 

 For assistance in the preparation of this paper thanks are 

 due, above all, to Prof. T. H. Macbride, whose energy and 

 enthusiasm made the expedition possible, and whose sugges- 

 tions in general, and those concerning arrangement and rela- 

 tionship in particular, have been of great assistance. 



Much-needed assistance was also rendered by Prof. W. 

 Treiease. who loaned valuable herbarium specimens and 



1 Bull. Lab. Xat.Hist., State Univ. of Iowa, vol. II, pp. 345-376. 



