252 



FERNS : BEITISH AND FOREIGN. 



24. H. lineare, Sw. H. trifidum, Hook, et Grev. Ic. Fil 1. 196. 



H. elegans, Spreng. West Indies and Tropical 

 America. 



25. H. sericeum, 8w. (Plum. Fil. t. 73). West Indies and 



Tropical America. 



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



d'Acunha, New Zealand. 



138. TBICHOMANES, 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. 



8. T. punctatum, Poir. ; 

 Hook, et Grev. Ic. 

 Fil. t. 236. West 

 Indies. 



Genus 1 38. Fertile frond, natural 

 size. No. 11. 



