113 
FERNS : BRITISH AND FOREIGN. 
43. GYMNOPTERIS, Bernh. ; 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 2-3 feet high. Primary veins costseform ; 
venules compound anastomosing, with free variously directed 
veinlets terminating in the areoles. Sporangia amorphous. 
1. G. quercifolia, Bernh.; Presl; Hoolt. Ic. PI. t. 905; 
Hook. Fil. Exot. t. 80. Acrostichum quercifolium, 
Betz. ; Sw. ; S chic. Fil. t. 3. Gymnopteris Nicnerii, 
Hort. — Ceylon. 
2. G. nicotianse folia, Presl ; Fee, Acrost. t. 46. Acrostichum 
nicotiamefolium, 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 ; nook. Gen. Fil. t. 85. Acrostichum 
alienum, Sw. ; Plum. Fil. 1. 10. — Tropical America. 
5. G. Gaboonense, J. Sm. Acrostichum (Gymnopteris) 
Gaboonense, nook. Sp. Fil. 5, p. 270. — Tropical 
West Africa. 
