210 
IOWA ACADEMY OF SCIENCES. 
Poa L. 
81. P. compressa L. Infrequent, woods and prairies. 
82. P. pratensis L. Kentucky Blue-grass. Everywhere 
along roadside, but not native to this region. 
88. P. flava L. (P. serotina Ehrh.) Frequent, woods and 
prairies. 
84. P. sylvestris A. Gray. Frequent in woods. 
Scolochloa Link. 
85. S. festucacea. (Willd.) Link. Graphephorum fes- 
tucaceum A. Gray. Frequent in marshes. This 
is the southern limit of the species in the United 
States so far as known. 
Panicularia Fabr. 
86. P. nervata. (Willd.) Kuntze. ( Glyceria nervata 
Trin.) Low woods and prairies; common. 
87. P. americana. (Torr.) Mac M. (Glyceria grandis 
Watson.) A robust species common in marshes. 
88. P. fluitans L. Kuntze. (Glyceria fluitans L.) Com- 
mon in marshes. 
Festuca L. 
89. F. nutans (Willd.) Low woods, Estherville and Iowa 
Lake. 
Bromus L. 
90. B. ciliatus L. Common in woods and very variable. 
91. B. secalinus L. Chess, Cheat. Becoming quite com- 
mon; introduced from Europe into wheatfields. 
Agropyron J. Gaertn. 
92. A. occidentale Scribner. (Agropyrum spicatum Scrib. 
& Smith.) Common on dry prairies; a very good 
pasture grass. 
98. A. tenerum Vasey. Woods and prairies; common. 
94. A. caninum (L) R. and S. ( Agropyrum unilaterale 
Vasey.) Rare on dry praries. 
Hordeum L. 
95. H.jubatum L. Wild Barley. A troublesome weed, 
everywhere common. 
