88 Rhodora [May 
cut, and northern and central New York. QueEsBec: Gaspé County: 
alluvial thickets and woods near mouth of Dartmouth River, August, 
1904, Collins, Fernald, & Pease. Wright County: Pickanock River, 
August, 1894, J. Macoun, no. 7421. Marne: Aroostook County: 
Fort Fairfield, 1881, K. Furbish; low gravelly thickets along St. John 
River, St. Francis, August, 1893, Fernald, no. 197; and July, 1900, 
E. F. Williams. Piscataquis County: gravelly shore, Dover, Sep- 
tember, 1894, Fernald; banks of Pleasant River, Milo, August, 1904, 
J. C. Parlin, no. 1793. Somerset County: sandy river-banks and 
river-intervales, Dead River, August, 1896, Fernald & Strong, no. 490. 
Oxford County: Rumford, 1889, J. C. Parlin; thicket on river-bank, 
Canton, August, 1906, J. C. Parlin, no. 2038. Kennebec County: 
river thickets, Sydney, August 1916, Fernald & Long, no. 12748. 
New HampsuireE: Coos County: Jefferson, August, 1874, Wm. Boott; 
damp roadside near Bois Mountain Station, Jefferson, August, 1907, 
A. S. Pease, no. 100104; alluvial bank of Israel River, Lancaster, 
August, 1909, A. S. Pease, no. 12289; gorge of Diamond River, 
Dartmouth College Grant, August, 1914, A. S. Pease, no. 16282; river- 
bank, Northumberland, July, 1909, A. S. Pease, no. 12127; “Lost 
Nation,” Northumberland, July, 1906, E. F. Williams. VERMONT: 
Caledonia County: St. Johnsbury Center, August, 1874, J. W. 
Congdon. Windham County: moist thickets along West River, 
Townshend, August 11, 1911, L. A. Wheeler. Massacnusetts: Hamp- 
den County: sandy river-bank, sericite schist, Russell, May, 1913, 
St. John & White, no. 30; river-thicket, Westfield, September, 1912, 
C. H. Knowlton. Berkshire County: Williamstown, September, 1897, 
and July, 1898, J. R. Churchill; flood plain, Stockbridge, August, 
1902, R. Hoffmann. Connecticut: Hartford County: bank of river, 
East Windsor, August, 1902, C. H. Bissell. Litchfield County: dry 
shaded sandy bank of the Naugatuck River, Reynolds Bridge, Sep- 
tember 3, 1910, A. E. Blewitt. New Haven County: dry sandy woods, 
banks of Naugatuck River, Waterbury, “very glaucous all over,” 
July, 1908, A. E. Blewitt, no. 35; in sandy thicket, Waterbury, Sep- 
tember, 1911,.d. E. Blewitt. New York: St. Lawrence County: 
Little River, Canton, August, 1914, O. P. Phelps, no. 134. Madison 
County: Oneida, August, 1906, H. D. House, no. 2860. 
This species differs from the next in the broad thin villous leaves, 
longer spikelets with more flowers, shorter glumes and usually in the 
more slender and open spike. There is some evidence that it matures 
earlier. ŒE. canadensis is a plant of the inland waterways of the 
Northeast, in situations which are not extremely dry; while Æ. 
robustus inhabits dry sandy or rocky banks and sand dunes, and has a 
more southerly and westerly distribution. The striations upon the 
glumes in both E. canadensis and E. robustus extend more nearly to 
the base than in any other species. Specimens of E. robustus with 
