38 MICHIGAN ACADEMY OF SCIENCE. 



35. BROMUS, Lin. 



93. ciliatus, Lin. Vic. Linden Park. Rare. 



94. tectorum, Lin. Grassy sides of streets in Detroit. Frequent. 



95. commutatus, Schrad.? Shores of Belle Isle. Rare. 



Cannot be B. racemosus to which this species is usually referred. Possi- 

 bly it is B. arvensis ; the spikes are softly pubescent. 



96. hordeaceus. Lin. B. inoUis, Lin. On sandy shores of Belle Isle. Rare. 



97. secalinus, Lin. Belle Isle, etc. Common. 



98. racemosus, Lin. Sandy shores of Belle Isle. Common. 



36. LOLimi, Lin. Ray or Rye Grass. » 



99. temulentum, Lin. Naturalized on Belle Isle, etc. Rare. Also cultivated. 



37. AGROPYRON, J. Gartn. Wheat Grass. 



100. repens (Lin.) Beauv. Belle Isle. Frequent. 



101. var. agreste, Anders. Grassy banks of streets in Detroit. Com- 



mon. 



102. var. neraorale, Anders. Waste grounds at Detroit. Common. 



103. var. pilosum, Scrib. & Sm. Belle Isle, etc. Common. 



104. forma stoloniferum. Spikelet not over 5-8 inch in length; empty 



glumes not more than a half the length of the spikelet; all the 

 glumes cuspidate or with an awn equal to half their length. 

 Culms rigidly erect, single; lower sheaths pubescent; leaves flat, 

 smooth on the back, more or less scabrous or short strigose 

 above. Grassy banks at Detroit. Frequent. No. 1634. 



105. forma geniculatum. Spikes approaching those of A. Smithii : 



spikelets elongated, % of an inch or more long, lowest remote, 

 often an inch and a half apart, empty glumes cuspidate; flower- 

 ing glumes acute, not awned. Culmes geniculate, csespitose, 

 forming mats 6 inches to a foot in diameter : leaves flat, scab- 

 rous above, smooth on the back ; sheaths smooth equaling or 

 exceeding the internodes. Sides of streets and ditches at De- 

 troit. Frequent. No. 1635. 



106. Smithii, Rydb. Waste places at Detroit. Common. 



107. caninum (Lin.) R. & S. Near Palmer Park. Frequent. 



38. TRITICUM, Lin. Wheat. 



108. sestivum, Lin. T. vulgare Vill. Waste places at Detroit. Frequent. 



109. var. hybernum (Lin.) T. hyhernum Lin. Sp. PL 86:1753. The 



glumes awnless; common beardless wheat. Belle Isle. Fre- 

 quent. 



39. SECALE, Lin. Rye. 



110. cereale, Lin. Frequent on Belle Isle and on waste grounds at Detroit. 



40. HORDEUM, Lin. Barley. 



111. jubatum, Lin. Squirrel-tail Grass. Waste places at Detroit. Frequent. 



41. ELYMUS, Lin. Wild Rye. 



112. striatus, Willd., var. villosus (Muhl.) A. Gr. Belle Isle. Frequent. 



113. Virginicus, Lin. Belle Isle. Rare. 



114. Canadensis, Lin. Belle Isle. Frequent. 



115. var. glaucifolius (Willd.) Torr. Near old Race-course at Detroit. 



Rare. 



42. HYSTRIX, Mcench. Bottle-brush Grass. 



116. Hystrix (Lin.) Millsp. In woods on Belle Isle. Common. 



