252 



FERNS I BRITISH AND FOREIGN. 



24. H. lineare, Sw. |H. trifidum, Hook, et Grev.Ic. Fil. 196. 



H. elegans, Spreng. West Indies and Tropical 

 America. 



25. H. sericeum, Sw. (Plum. Fil. t. 73). West Indies and 



Tropical America. 



26. H. seruginosum, Carm. ; Hook. Sp. Fil. t. 34 ^.Tristan 



d'Acunha, New Zealand. 



138. TRICHOMANES, Linn. 



Vernation fasciculate and erect, or uniserial and sarmentose. 



Fronds varying from simple to 

 decompound-multifid, membra- 

 naceous and pellucid, smooth, 

 or bearing simple, forked, or 

 stellate hairs. Veins simple or 

 forked, free. Sori terminal, 

 often sub-pedicellate. Indu- 

 sium urceolate or tubular. Re- 

 ceptacle continued beyond the 

 sporangia and mouth of the 

 indusium, often elongated and 

 filiform. 



* Vernation uniserial, 

 sarmentose. 



1. T. reniforme, Forst.; 



Hook, et Grev. Ic. 

 Fil. t. 31 ; Hook. Fil. 

 Exot. t. 76. New 

 Zealand. 



2. T. membranaceum, 



Linn. (Plum. Fil. 

 t. 101, /. A); Hook. 

 Exot. Fl. t. 76. 

 West Indies. 



3. T. pujnctatum, Poir. ; 



Hook, et Grev. Ic. 

 Fil. t. 236. West 



Genus 188. Fertile frond, natural T ,. 



size. No. 11. indies. 



