hop hornbeam. Basswood overcomes the difficulty by ex¬ 
cessive sprouting. Approximately half way down the slope, 
a bench occurred, 15 - 20 m. wide, and nearly level. A 
striking feature hero was the appearance of rather large 
conifers, including specimens of white pine (up to 5 dm. 
dia.} balsam, white spruce, and arbor vitae. Poplar as 
the dominant species was replaced by red oak and white 
birch, ilore mesophytic oondi tions were indioatod by the 
presence of such species as Smilacina racomosa (L.) Desf. 
(false spikenard), Galium triflorum Iliohx. (sweet-scented 
bed straw), Hepatioa triloba Chair (liver-leaf), liaianthamum 
oanadense Pesf. (false lily-of-the-valley), Strootopus 
roseus Michx. (tv/is ted-stalk ) and Mitohella re pens L. (part¬ 
ridge-berry). Gradually the oaks were replaced by the sugar 
maple, which became the dominant species to the edge of the 
flood plain, with white pine still frequent as a subdominant. 
At the edgo of the forest bordering the flood plain, the 
increased light and moisture conditions produce a marked 
change in tho ground cover, with a great diversity of species 
coming in. Seedlings of aspen ( Populus tremulo ides) and 
hazel ( Oorylus rostrata ) seem to be responses to tho in¬ 
creased light. Tho frequent occurrence of wild black cherry 
( Prunus aorotina ) along the margin of the forest is undoubted 
ly a response to tho same conditions. Groves of aspon 
