THE FERNS OF NICARAGUA. 



127 



b. Sporangia with annulus more or less rudimentary, or rarely wanting. 



1. Annulus vertical or wanting. Sub-order V. Ceratopterid.e 



Not represented in the collection. 



2. Annulus subapical, transverse. Sub-order VI. Os.mvndace.e. 



Not represented in the collection. 



Sub-class II Eusporangiatae. 



A. Fertile frond or segment distinct. Sub-order I. Ophioglossace.e. 



Not represented in the collection. 



B. Sporangia usuallv joined in synangia and borne on the back of the 

 frond. Fertile fronds not differentiated. 



Sub-order II. Marattiace.e. 



The notes on habit given in the annotated list which follows 

 were taken in the tield by the author. Under each species 

 reference is made only to the works which were consulted 

 for the distribution, description or figure of that species. The 

 full list of the works consulted is given at the close of the 

 paper. For convenience the names, printed in italics, of spe- 

 cies heretofore reported from Nicaragua, but not collected by 

 the author, are added at the end of each genus. 



Class FILICINEjE. 



Sub-class I. LEPTOSPORANGIAm 



Order II. HO.WOSPOR/E. 



Sub-order I. HYMENOPHYLLACEiE. 

 Genus HYMEXOPHYLLU.M Smith. 



I. H. POLYANTHOS SwarLz. PI. I. Fig. I. 



Hook, et Grew. Icon. Fil., PI. cxxvm : Hook., Sp. Fil.. vol. 1. p. 106: Hook, 

 and Bak., Syn. Fil., p. 60: Bed., Ferns of S. Ind., p. SS, pi. cclxvii; 

 Hemsley, Biol. Cent. Am., vol ill, p. 600: ibid., vol. IV, p. 115 (from 

 Costa Ricai: Johow, An. de la Univ. Rep. de Chile, vol. lxxxii, p. 

 iooo, fig. 29. 



H. frotrusum Hook., —Hook... Sp. Fil., vol. 1, p. 104, PI. xxxvn B. 

 //. jalapense Schl.. — Fournier, Bull. Soc. Bot. Fr., vol. xxvu.p. 249. 



All of the specimens which were collected are sterile, but 

 a careful comparison with authentic herbarium specimens. 

 IV— 11 K 



