April, 1908.] 



The Vegetation of Cedar Point. 



323 



Facies: Arctostapkylos uva-ursi, 

 Juniperus virgin iana. 



Secondary Species: 



Andropogon scoparius, Panicum virgatum, 

 Lithospermmn gnielini, Quercus imbricaria, 

 Quercus velutina, Celastrus scandens, 



Toxicodendron pubescens, Parthenocissus quinquefolia, 

 Rubus procumbens. 



The heath on Presque Isle with somewhat more northern con- 

 ditions of environment is regularly followed by a white pine forest 

 which, in turn, is regularly replaced by a black oak forest. On 

 Cedar Point, however, the pine stage does not appear to inter- 



FiG. 11. One of the park-like vistas in. the Quercus velutina-imbricaria 

 Forest Formation in the northern part of the Dune Section. Juni- 

 perus and Celtis with the oaks, the border thicket being of Toxicodendron, 

 Rhus aromatica, Prunus virginiana, while in sand plain are Panicum 

 virgatum, P. scribneriamim, and Lepidium virginicum. 



vene but the heath stage is directly followed by the Quercus 

 velutina-imbricaria Forest Formation, typically as described under 

 the Cottonwood Bar-Ridge-Thicket-Forest Succession. In the 

 northern part of the Dune Section there appears to be some ad- 

 vance towards the Lake on the part of the oak forest, young oaks 

 being quite common in the heath at some distance in advance 

 of the mature trees. 



