OPHIOGLOSSUM VULGATUM 
LASTREA ULIGINOSA 
(Plate XVI) 
For this species we refer our readers to Fig. 184 and Plate 
XVI) for the reasons given in connection with Г. spinulosa. 
Fig. 184. 2. uliginosa (pinna). 
L. uliginosa is a denizen of boggy woods; it has afforded по 
varieties worthy of note. 
OPHIOGLOSSUM VULGATUM (THE ADDER's-TONGUE FERN) 
(Plate XT) 
This little Fern (Fig. 185) consists of a smooth-edged, lance- 
shaped, leathery, barren frond, minus any midrib, and a long, . 
spiky, fertile one, the latter bearing a fanciful resemblance to a 
Fig. 185. O, vulgatum (part of frond). 
serpent’s tongue, though not forked. It is probably far more 
plentiful than is supposed, since it frequents open, moist, pasture 
land, and might be easily mistaken for plants of the common plan- 
tain weed, both as to its barren frond, which resembles the leaf, 
and the fertile spike, which resembles the seed spike. Deciduous. 
It has a creeping rootstock, and if lifted еп masse in a clod of earth, 

