MICHIGAN ACADEMY OF SCIENCE. 145 



Calamagrostis canadensis (Michx.) Beauv. Blue-joint Grass. — Common 

 in swamps and wet places, especially on the delta islands of St. Clair River. 



Calamagrostis neglecta (Ehrh.) Gaertner, Meyer and Scherbius. Nar- 

 row Reed Grass. — Occasional along railways and in dry open woods. 



Ammophila arenaria (L.) Link. Sea Sand-reed. Beach Grass. — Frequent 

 in drifting sand along the Lake Huron shore. One of the best sand-binders 

 against the action of both wind and wave. 



Cinna arundinacea L. Wood Reed Grass. — Frequent in moist woods and 

 shaded swampy places. 



Sphenopholis abtusata (Michx.) Scribn. Blunt-scaled Eatonia. — ^Occa- 

 sional on the delta islands of St. Clair River^ 



Koeleria cristata (L.) Pers. Koeleria. — Frequent on dry and sandy ground. 



Danthonia spicata (L.) Beauv. Common Wild Oat Grass. Common on 

 dry and poor open or shaded ground. 



Spartina michauxiana Hitchc. Slough Grass. — Frequent in marshes and 

 wet places. Abundant on the delta islands of St. Clair River. Formerly 

 included with S. cynosuroides (L.) Roth., Salt Reed Grass. 



Phragmites communis Trin. Reed. — Formerly very common in swamps 

 and very wet places. Abundant yet in verv wet places on the delta islands 

 of St. Clair River. 



Triplasis purpurea (Walt.) Chapm. Sand Grass. — On sand along the Lake 

 Huron shore. Apparently rare. 



Eragrostis hypnoides (Lam.) BSP. Creeping Eragrostis. — Frequent on 

 damp ground, in dry ditches, and along sandy and gravelly shores. 



Eragrostis frankii (Fisch., Mey. and Lall.) Steud. Frank's Eragrostis. — 

 Frequent on moist open ground. 



Eragrostis pilosa (L.) Beauv. Pursh's Eragrostis. — Frequent on dry and 

 often hard ground about depots, freight yards, and along railway embank- 

 ments. Also often named E. purshii, Schrad. 



Eragrostis megastachya (Koeler) Link Strong-sc ented Eragrostis. — Fre- 

 quent as a weed in gardens, cultivated grounds, and"waste places. 



Melica Smithii (Porter) Vasey. Smith's oat — Rich woods near Port. 

 Franks, apparently infrequent. 



Melica striata (Michx.) Hitchc. Purple Oat. — Occasional in open woods. 



Dactylis glomerata L. Orchard grass. Frequent in yards, fields, and on 

 roadsides. Cultivated. 



Poa annua L. Low Spear Grass. — Becoming very common in lawns, 

 fields and open woods. 



Poa compressa L. Canada Blue Grass. Wire Grass. — Very common on 

 sandy ground, in dry pastures and fields. 



Poa trifiora Gilib. Fowl Meadow Grass. — In wet meadows and damp open 

 woods. 



Poa pratensis L. June Grass. Kentucky Blue Grass. — The common 

 grass of our yards and lawns. Abundant in pastures, fields, meadows and 

 open woods. 



Poa debilis Torr. Weak Spear Grass. — Occasional in open woods and 

 thickets. 



Poa alsodes Gray. Grove Meadow Grass. — Occasional in open woods 

 and thickets. 



Glyceria torreyana (Spreng.) Hitchc. Long Manna Grass. — Reported by 

 Prof. John Macoun as noticed in woods near Sarnia. Apparently rare. 



Glyceria canadensis (Michx.) Trin. Rattlesnake Grass. — Frequent in 

 swamps, marshes and wet places. A beautiful grass. 

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