April, 1908.] 
The Vegetation oj Cedar Point. 
3 2 5 
what more sheltered position. Among the secondary species are 
a few not found in the formation as it appears on the dunes. One 
plant of Juniperus nana appears here, this being probably the ex¬ 
treme southern range of the species, so far reported for America, 
excepting certain distinctly alpine stations. 
In the vicinity of the Lake Laboratory there is a blowout 
vegetation of a distinctly different character from that of the 
heath occupying the blowouts farther to the north. Apparently 
due to the deciduous character of the dune vegetation in the 
southern part of the Dune Section the blowouts are more pro¬ 
nounced, and, in fact, the dunes are often completely destroyed 
by the undermining of the sand by a deep adjacent blowout. 
Fig 13. Juniper-capped dune to the north of the Laboratory. The 
blowout which includes some “fossil beach" has Panicum virgatum, P 
scribnerianum , Andropogon, Salix interior , Lepidium virginicum. 
In many cases the sand has been blown away so that the former 
beach has been again exposed (fossil beach) and in one blowout 
to the south of the Laboratorv there has been either a wind exca¬ 
vation below' the normal Lake level or the w'ater has risen into 
the bottom of a deep blowout, and there has been initiated there 
a small lagoon succession. 
The blowout vegetation near the Laboratory may probably 
be best regarded as an extension of the Artemisia-Panicum Sand 
Plain Formation. The same facies are in evidence although the 
relative importance of the secondary species is considerably dif¬ 
ferent. Salix interior and its variety wheeleri, Euphorbia poly- 
