IOWA ACADEMY OF SCIENCES. 
211 
Elymus L. Wild Eye. 
96. E. striatus Willd. Frequent in woods. 
97. E. virginicus L. Frequent in woods, and on river 
banks. 
98. E. canadensis L. Common, and extremely variable. 
Hystrix Moench. 
99. H. hystrix (L.) Millsp. [Elymus hystrix L.) Com- 
mon in woods. 
CYPE RACEME; 
Cyperus L. 
100. C. rivularis Ivunth. [C. diandrus var castaneus 
Torr.) Very common and variable; banks of lakes 
and rivers. 
101. C. inflexus Mu hi. (C. aristatus Boeckl.) Common; 
banks of lakes and streams. 
102. C. schweinitzii Torr. North shore of Swan Lake; 
also at Spirit Lake, Dickinson county. 
108. C. erythrorhizos Muhl. Banks of lakes and streams; 
our handsomest species. 
104. C. sjoeciosa Vahl. Banks of lakes and streams, and 
in marshes; very variable. 
105. C. strigosus L. Less common than the preceding 
and in similar situations; variable. 
106. G. strigosus capitatus Boeckl. Very distinct in ap- 
pearance, but undoubtedly merely a state pro- 
duced by very dry weather. Rare; slough one 
mile northeast of Armstrong. 
Eleocharis R. Brown. 
107. E. palustris (L.) R. & S. Common in'marshes and 
variable. 
108. E. palustris glaucescens (Willd.) Gray. Very com- 
mon in low ground. 
109. E. acicularis (L.) R. & S. Everywhere in low 
marshy places. 
1 10. E. wolfii Gray. Rare ; low prairies near Armstrong. 
