NICHOLS: THE VEGETATION OF CONNECTICUT 261 
Asplenium Filix-femina Impatiens biflora 
Onoclea sensibilis Viola cucullata 
Leersia virginica Circaea lutetiana 
Muhlenbergia mexicana Verbena hastata 
Cinna arundinacea Eupatorium purpureum 
Bromus altissimus Eupatorium urticaefolium 
Elymus canadensis Solidago serotina 
Pilea pumila Aster paniculatus 
Boehmeria cylindrica Helenium autumnale 
Thalictrum polygamum 
Flood Plain Associations along Other Streams.—The conditions 
described in the preceding paragraphs are found not only along the 
Connecticut, but also along the Housatonic and to a considerable 
-——_—— 
North Haven, 
"1G. tr. Cat-tail (Typha latifolia) marsh along Muddy River, 
In the background is a flood plain forest of elm, pin oak, etc. 
extent along others of the larger rivers. But even along these 
rivers, there is a more or less noticeable variation in the aspect of 
hile along the smaller streams the de- 
y be very pronounced. 
ur along swift streams, 
gly willows, alders, 
flood plain associations, W 
parture from the described conditions ma 
On gravelly or stony flood plains, such as occ 
the pioneer forms of vegetation may be scrag 
