IOWA ACADEMY OF SCIENCES 
20 
OfCAETOCHLOA. 
57. G. verticillata (L). {Ixophorus verticillatus (L) Nash.) 
58. C. glauca (L) Scliibn. {Ixophorus glaucus (L) Nash.) 
59. C. viridis (L) Scribn. {Ixophorits viridis (L) Nash.) 
60. C. italica (L) Scribn. {Ixophorus italicus (L) Nash.) 
ClENCHRUS. 
61. (7. trihuloides L. Abundant on sandy soil. 
Zizania. 
62. Z. aquatica L. Plenty, though not so abundant as formerly 
Homajlocenchrus. 
63. H. virginicus (Willd) Britton. Plenty in damp places. 
64. H. oryzoides (L) Poll. Common in swamps. 
PlIAtARIS. 
65. P. arundinacea L. Frequent in marshes. 
Savastana. 
66. S. odorata (L) Scribn. 
A-kistida. 
67. A. hasiramea Engelm. Scarce. In dry places. 
Stipa. 
68. )8. spartea Triii. 
©RYZOPSrS. 
69. O. melanocarpa Miihl. Rocky woods. 
Muhlenbergia. 
70. ^ M. sobolifera (Muhl) Trin. In rocky woods. 
71. M. racemosa (Michx.) B. S. P. Plenty in moist places. 
72. M. mexicana (L) Trin. Common in wet places. 
73. M. tenuiflora (Willd) B. S. P. 
74. M. diffusa Schreb. On dry hillsides. 
Bbachyet.ytrum. 
75. B. erectum (Schreb) Beauv. Scarce in moist places. 
Fhleum. 
76. P. pratense L. Common. 
Axopecurus. 
77. A. geniculatus L. Scarce in marshy meadows. 
Sporobolus. 
78. neglectus Nash. 
79. airoides Torr. 
80. /Sf. heterolepsis A. Gray. 
81. S. asperifolius Nees & Meyen. 
Agrostis. 
82. A. alba L. Abundant everywhere. 
83. A. perennans (Walt.) Tcukerm. Along streams, etc. 
84. A. hyemalis (Walt.) B. S. P. Common. 
(§ALAM AGROSTIS. 
85. G. canadensis (Michx) Beauv. Common in wet meadows. 
Banthonia. 
86. D. Spicata (L) Beauv. Plenty in dry woods. 
^PARTIN A. 
87. S. cynosuroidcs (L) Willd. Common in swamps and marshes.. 
