Fig. 804.— Portion of barren frond. 



OPHIOGLOSSUM VULGATUM. 



LiNNiEUS. 



The Common Adder's Tongue. 



PLATE LXXY. A. 



Ophioglossum vulgatum. 



« 



(( 



<< 

 « 



ovatum, 



Siehlii, 



unifolium, 



Grayi, 



microstichum, 



LiNN^us. Bolton. SiMith. Mackat. 

 Hooker and Arnott. Babington. 

 Newman. Deakin. Moore. Gray. 

 SowEEBT. Bentham. Swartz. Koch. 



SCHKUHR. SpRENGEL. WiLLDENOW. 



Presl. Nyhan. Sturm. Ledebouk. 

 Mettenius. E. J. Lowe. 

 Salisbuey. . . 



Presl. 



GiLIBERT. 



Beck. 



aoharius. svensk. 



Ophioglossum — Froai ophios — a serpent, and glossa — a tongue, lionce its 

 name. Vulgatiim — Common. 



This diminutive inconspicuous Fern is a widely-dispersed 

 British Fern, occurring in moist loamy meadows from the 

 sea-level to six hundred feet elevation. 



Dispersed throughout Europe, and occurring in North 

 VOL. 11. 3 



