1. OPHIOGLOSSUII Trag. 155]. 
Lingua serpentina Latinis, Graecis ofioykaacov & 
Germants Naterzuenglin, a formasua. . . Tragus, 
Fist.=323. fig. 
Rootstocks erect with numerous fleshy roots. Sterile 
leaf-segments entire, lanceolate, ovate or rotund. Spore- 
cases connate, forming a two-ranked spike. 
+ Sterile segment obtuse. 
1. O. vulgatum L. Bit: 
Ophioglossum radice repente. Gron. 1743. FI. 
Vises 100, 
Opkioglossum vulgatum L. 1753.Sp. Pl. 1062. 
Lgaton, 1880. Herns N. Aim 2261 §.. 51 of. 
1-4; 1889. in Gray Man. 695. Unxderw. in Ill. 
Pl 1325 1900. Nat! Berns €d.0.00> 190k In 
Britt; Man,52. 3 -Clzre, oom, Dems Aguautean, 
Waters, 1903. Ferns 25. 341. 
ADDER’S TONGUE. 
Plants 1--3 dm. high; sterile leaf-segment ovate-ellip- 
tic, 3--lo cm. long, inserted below the middle of the 
petiole; spike 2--4 cm. long. 
In meadows and woods, rare. 
This plant was used by the ancients in the healing of 
wounds ; hence the Swedish word Leketunga ‘‘healing- 
tongue.” 
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