118 



FERNS I BRITISH AND FOREIGN. 



43. GYMNOPTEBJS, Bernli. ; Presl. 



Vernation uniserial and sarmentose, or contiguous sub- 

 fasciculate and decumbent. Fronds simple, lobed or pinnate, 



Genus 43. Portion of sterile frond, under side. No. 2. 



from 6 inches to 23 feet high. Primary veins costaeform ; 

 venules compound anastomosing, with free variously directed 

 veinlets terminating in the areoles. Sporangia amorphous. 



1. G. quercifolia, Bernh.; Presl; Hook. Ic. PI. t. 905; 



Hook. Fil. Exot. t. 80. Acrostichum quercifolium, 

 Retz. ; Sw. ; Schk. Fil. t. 3. Gymnopteris ]STicnerii, 

 Hort. Ceylon. 



2. G. nicotiangefolia, Presl ; Fee, Acrost. t. 46. Acrostichum 



nicotiansefolium, Sw. ; Hook. Gard. Ferns, t. 26. 

 West Indies. 



3. G. acuminata, Presl. Acrostichum acuminatum, Willd. ; 



(Plum. Fil. 1. 115). West Indies. 



4. G. aliena, Presl; Hook. Gen. Fil. t. 85. Acrostichum 



alienum, Sw. ; Plwm. Fil. 1. 10. Tropical America. 



5. G. Gaboonense, /. 8m. Acrostichum (Gymnopteris) 



Gaboonense, Hook. 8p. Fil. 5, p. 270. Tropical 

 West Africa. 



