194 
‘BRITISH FERNS. 
the herbage only, every effort. being directed to keep 
that in vigorous health. 
50. PIGMY ADDER’s TONGUE. — Lustrayicum. 
Ophioglossum lusitanicum, Linneus. B. F. 331, 
The roots are large in proportion to the size of the 
plant ; they are brittle, succulent, and spread hori- 
-zontally amongst the radicles of the herbage, from a 
‘somewhat elongate-ovate perpendicular caudex ; from 
le crown of this caudex, accompanied by a few — 
scarcely perceptible, withered, scale-like Spathes, rises 
a : stalk, which, in all my specimens, is divided 
