AN ENUMERATION OP CULTIVATED FERNS. 
271 
forming a distichous, synangeous spike, each cell opening 
horizontally in two equal valves. 
Genus 155. — Plant natural size; fertile spike enlarged. No. 3. 
Fronds erect, the sterile segments ovate or linear (Terrestrial). 
(E uophioglossum.) 
1. O. Lusitanicum, Linn.; Hoolc. et Grev. Ic. Fil. t. 80 ; 
Hindi. and Moore's Bnt. Ferns, t. 51 C; Sowerby’s 
Ferns, t. 47. Ophioglossum vulgatum, var. angusti- 
foliurn, Hoolc. Brit. Ferns, t. 47. — South of Europe. 
2. O. peduneulosum, Besv.; Kunze, Fil. t. 29, /. 2. — 
North America. 
