Ferns at Doveias Lake, Micnican-. 111 
The marshes differ considerably from the bogs, espe- 
cially in their formation and their location. They are not, 
as a rule, covered with a dense growth of trees but their 
vegetation consists largely of shrubs and herbaceous 
plants. The marsh fern, Aspidium thelypteris, is the 
most common species, while Osmunda regalis, O. cin- 
namomea, and Onoclea sensibilis are to be found scattered 
about the swamps in no definite order. The Osmundas 
are usually found growing very abundantly and luxuri- 
antly near the shaded banks of small streams and it is 
a very common thing to find them three and a half to 
four feet high. 
FERN VARIATIONS 
But one plant of Cystopteris bulbifera was found in 
1914 which showed any abnormal branching. This 
plant produced a frond which had a simple stipe, but at 
the junction of the first pair of pinnae, the stipe divided 
so that two well formed laminae were produced above the 
first pair of pinnae. It was also interesting to note that 
each frond bore bulbils as if a normal frond. 
Besides the young plants of Botrychium virginianum 
of the Bogs, it was noticed that the young plants of Bo- 
trychium ternatum intermedium of the hard woods so re- 
sembled the young plants of B. virginianum that it was 
sometimes difficult to tell the species. 
The ferns found growing in each of these regions are 
as follows: 
Pine Piains: Pteris aquilina L. 
Harpwoops anp Ciearines: Polypodium vulgare L., 
Phegopteris polypodioides Fée, Phegopteris dryopteris 
(L.) Fée, Adiantum pedatum L., Pteris aquilina L., As- 
plenium filix-foemina (L.) Bernh., Aspidium Goldianum 
Hook., Aspidium spinulosum, (O. F. Muller) Sw., Cystop- 
teris bulbifera (L.) Bernh., Cystopteris fragilis (L.) Bernh. 
Wiipeecgs 
_ “Nomenclature as in Gray's Manual, Seventh Edition, 
