1922] | Peattie,— Coastal Plain Element in Flora of Great Lakes ` 85 
also I have had to leave queries for the two coastal plain varieties 
of Andropogon scoparius. They are of such recent distinction that 
that there has not been time for full reports of their ranges to appear. 
Species in italies are endemic derivatives of coastal plain types. 
In the following list, it may be wondered that a column is not given 
to Lake Superior. That it is not, is partly due to the fact that I am 
not familiar with Lake Superior plants and that no adequate accounts 
of the flora exist. But it is also due to the fact that in all probabilty 
no important stations for coastal plain extensions occur on Lake Super- 
ior. In looking up the ranges of the approximate hundred of coastal 
plain extensions in the inland, I have been impressed by the fact that 
the meagerest sprinkling of them occur on Lake Superior; herbarium 
specimens and reliable reports are in great part lacking for these 
species in that area. 
Probably there has occured no great westward migration of coastal 
plain plants to Lake Superior. "This is the more proven when we recall 
that Lake Superior was the last of the Great Lakes to be uncovered 
by the glacier;it was still under the ice when the other lakes were clear 
of it and probably thriving with marginal vegetation. It is, moreover, 
South Shore of Saginaw Bay, Michigan (edited by Ruthven), Mich. Geol. & Biol. 
Surv. iv, biol. ser. 2, 72-120 (1911). 
—Flowering Plants, Ferns and Fern Allies Growing without Cultivation in Lambton 
County, Ontario, 16th. Ann. Rep. Mich. Acad. Sci. 137-200 (1914). This range 
includes Port Huron, Michigan. 
Dudley, The Cayuga Flora, Bull. Cornell Univ. ii. 1-132 (1886). 
Gates, The Vegetation of the Beach Area in Northwestern Illinois and South- 
eastern Wisconsin, Bull. Ill. State Lab. Nat. Hist. ix’. 353-369 (1912). 
Gleason, Vegetation of the Sand Deposits of Illinois, Bull. Ill. State Lab. Nat. 
Hist. ix?, 146-170 (1910). 
Goodrich, Flora of Onondaga County, 7-193 (1912) (a compilation accepted with 
some reservations). 
Higley & Raddin, Flora of Cook County, Illinois, and a part of Lake County, 
Indiana, Bull. Chi. Acad. Sci. iii, 1-156 (1891) (a compilation accepted with some 
reservations but including the results of the splendid collections of E. J. Hill from 
northern Indiana). 
Jennings, Botanical Survey of Presque Isle, Erie County, Pennsylvania, Ann. 
Carnegie Mus. v. 405-421 (1909). 
Kellerman & Werner, Ohio Plants, Geol. Ohio, viii, 56—403 (1893) (a compil- 
ation accepted with some reservations). 
Mosley, Sandusky Flora, Ohio State Acad. Sci. spec. pap. i. 35-162 (1899). 
Paine, Catalogue of Plants found in Oneida County and Vicinity, Rep. Regents. 
Univ. N. Y. State, 1-140 (1865). 
Pieters, Plants of Western Lake Erie, U. S. Fish. Comm. Bull. 77-79 (1901) 
Rydberg, Flora of the Sand Hills of Nebraska, Contrib. Nat. Herb. iii. 133-203, 
(1895). 
Schaffner, Catalogue of Ohio Plants, Ohio Biol. iii. 131-237. (1914). 
