MICHIGAN ACADEMY OF SCIENCE. 
57 
The Cliamaedapline ccilyculata Association. 
Second in importance only to the Corex filif orm is a.s a bog association, 
is the C h amae d aph ne association. In this region it is present in several 
small bogs. The best illustration of it is Silver Lake, a little south of 
Pryant’s hotel, shown in Plate 8. This little lake was, at some early 
day, a bay of Douglas Lake. Plants of the heath family thuroly domi- 
nate the association, but in addition there is a sprinkling of showy 
secondary species. This association does not extend out into the open 
water as some of the previous ones have. It is dependent upon the 
presence of a previous association in which it can obtain a foothold. 
Usually this is the Carex filiformis association, into which the Chamae- 
daphne very readily invades. The floating mat is taken hold of as tho 
it were normal ground. Occasionally this invasion is so very rapid, 
especially during the year or two following a burn, that Cliamaedapline 
apparently is pushing its way out into open water. When cases of this 
nature were more carefully investigated, it was clearly seen that the 
pure Carex filiformis association was narrow and that the Cliamaedapline 
had grown thru it and the projecting ends grew out into the water, but 
there they could not support an upright growth of stems and leaves. 
In general this association is succeeded by an association of shrubs 
but in this region this is not often the case. Here the succeeding asso- 
ciation is usually a bog tree association, such as the Larix and Thuja 
associations, as shown in the background of Plate 9. In some of the 
newly forming bogs, willow thickets, or more often, thickets of Myrica 
gale and Ahius follow the Cliamaedapline. In cases of severe disturbance 
of natural conditions, as by fire, the aspen association will follow the 
Cliamaedapline. One case is at hand where a burnt-over area of Climn- 
aedaphne came up to a Calamagrostis meadow. 
List of the Species of the Cliamaedapline Association : 
DOMINANT SPECIES. 
Cliamaedapline calyculata. Sphagnum, spp. 
Kalmia poUfolia. Andromeda glaucophylla. 
V acci mu m oxy coccus. 
SECONDARY SPECIES. 
1 / ciiyanthes trifoliate. 
So rracenia p urpurea . 
Calopogon pulclielUis. 
A spidi um thelypteris. 
Seirpus cyperinus pelius. 
Eriopli oru m rirginicu m. 
Carex pan ci flora. 
Habenaria It Icphariglotl is. 
Epilobium coloration. 
0 smunda rega l is. 
Osmund a cinnamomea . 
Ci/pri pedium acaude. 
RELIC SPECIES. 
Nymphaea americana (rare). Smilacina trifolia (in burnt-over 
places) . 
