118 Cheney and True—Flora of Madison and Vicinity. 
Cystopteris, Bernhardi. Bladder fern 
738. C bulbifera, Bernh. 
Growing on the principal rock exposures about 
Lakes Mendota and Monona. Local. 
739. C. fragilis , Bernh. 
Shaded banks south of Lake Mendota. Rare. 
Onoclea, L. 
740. 0. sensibilis , L. Sensitive fern. 
Moist thickets and meadows throughout the re¬ 
gion. Not uncommon. 
Osmund a, L. Flowering fern. 
741. *0. regalis, L. Flowering fern. 
But a single small specimen of this fern has been 
observed. This stands on the right bank of the 
little stream which forms the outlet of Lake Win- 
gra, a few rods below the lake. 
742. 0. Claytonia , L. 
Moist, rich woods. Not uncommon. 
Ophioglossace^. (Adder’s-tongue Family.) 
Botrychium, Schwartz. Moonwort. 
743. B. Virginianum , Schwartz. 
Found in all rich woodlands, though not abun¬ 
dant. 
Ophioglossum, L. Adder’s-tongue. 
744. 0. vulgatum , L. 
A few specimens collected on the low, sandy ridge 
northeast of Lake Wingra, about fifteen rods from 
the lake. 
Lycopodiace^:. (Club-moss Family.) 
Lycopodium, L. Club-moss. 
745. L. lucidulum , Michx. 
South of Fish Hatcheries. Rare. 
