April, 1908.] 
The Vegetation of Cedar Point. 
2 95 
d—The Potamogeton Formation, and 
The Castalia-Nymphaea Formation, and 
The Decodon-Persicaria Formation, and 
The Cephalanthus-Cornus Formation, and 
The Rhus-hirta Formation, and 
The Ulmus-Acer Forest Formation. 
C—The Beach-Sand Plain-Thicket-Forest Succession. 
a—The Lower Beach. . .The Chlamydomonas Formation, 
b—The Drift Beach.The Cakile-Xanthium Formation, 
c—The Sand Plain . The Artemisia-Panicum Formation, 
d—The Rhus-Prunus-Toxicodendron Thicket Formation, 
e—The Quercus velutina-imbricaria Forest Formation. 
D—The Beach-Sand Plain-Heath-Forest Succession. 
a—The Lower Beach. . .The Chlamydomonas Formation, 
b—The Drift Beach.The Cakile-Xanthium Formation, 
c—The Sand Plain.The Artemisia-Panicum Formation, 
d—The Heath.The Arctostaphylos-Juniperus 
Heath Formation, 
e—The Quercus velutina-imbricaria Forest Formation. 
E—The Dune and Blowout Successions. 
a—The Ammophila Fringing-Dune Formation, 
b—The Elymus Dune Formation, or 
The Andropogon Dune Formation, 
c—The Prunus-Rhus Dune Thicket Formation, or 
The Arctostaphylos-Juniperus Heath Formation. 
a—The Artemisia-Panicum Blowout Formation, 
b—The Arctostaphylos-Juniperus Heath Formation. 
(The Secondary Catalpa Blowout Formation). 
F.—The Bay-Marsh-Wet Meadow-Thicket-Forest Succession. 
A. The Beach Habitat. 
a—Same as under the Beach-Sand Plain-Thicket-Forest 
Succession. 
B. The Marsh Habitat, 
a—The Scirpus Formation, 
b—The Phragmites-Typha Marsh Formation, 
c—The Salix discolor-lucida Thicket Formation, or 
The Calamagrostis canadensis Wet Meadow Formation, 
d—The Rhus hirta Thicket Formation, 
e—The Ulmus-Acer Forest Formation. 
C. The Cove Habitat, 
a— (The Chara Formation), 
b—The Potamogeton Formation, 
c—The Castalia-Nymphaea Formation, 
d—The Phragmites-Typha Marsh Formation, 
e—The Calamagrostis canadensis Wet Meadow Formation, 
