MICHIGAN ACADEMY OF SCIENCE. 
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23. Triglocliin maritima, Lin. Arrow-grass. 
Marl bogs. Frequent. 
Family !). Alismaceae. 
24. Alisina Plantago-aquatira, Lin., Yar. triyialis (I’li.) Fanvell. 
Water Plantain. 
Muddy places. Scarce. 
2.1. Sagittaria lati folia, \Yi lid. Arrow-head. 
Muddy places. Scarce. 
20. Sagittaria latifolia. Willd., forma hastata (Pli.) Robinson. Arrow- 
head. 
Muddy places. Scarce. 
Family 10. Hydrocliaritaceae. 
27. Elodea Canadensis, Mx. Water Weed. 
Slow flowing water. Rare. 
Order YIT. Graminales. 
Family II. Graminaceae. The Grasses. 
28. Andropogon furcatus, Mulil. Beard Grass. 
Sandy Hills. Common. 
29. Sorgastrum nutans (Lin.) Nash. Indian Grass. 
Sandy waste places. Scarce. 
30. Panicum inqdicatum, Scribn. Panic Grass. 
Marl bogs. Common. 
31. Setaria glauca (Lin.) Beany. Foxtail Grass. 
Waste places. Common. 
32. Setaria Italica (Lin.) Beany. Hungarian Millet. 
Waste places. Common. 
33. Cenchrus Carolinianus, Walt. Bur Grass. 
Waste places. Common. 
34. Sayastana odorota (Lin.) Scribn. Vanilla Grass. 
Swamps. Scarce. 
35. Flileum pratense, Lin. Timothy. 
Fields and pastures. Common. 
36. Cinna arundinacea, Lin. Reed Grass. 
Rich woods. Common. 
37. Agrostis stolonifera, Lin. Red Top. 
A vulgaris Withering. 
Pastures and swamps. Common. 
38. Oalamagrostis Canadensis (Mx.) Beany. Blue joint grass. 
Swamps. Rare. 
39. Danthonia spicata (Lin.) Beany. Oat Grass. 
Sandy Hills. Rare. 
40. Arundo Phragmites, Lin. Reed Grass. 
Mud swamps. Occasional. 
41. Eragrostis multiflora (Forsk.) Ascii ers. Stink Grass. 
Waste places. Scarce. 
42. Shenopholis pal lens (Spreng.) Scribn. 
Swamps. Common. 
43. I’oa annua, Lin. Spear Grass. 
Low grounds. Common. 
44. Poa compressa, Lin. Wire Grass. 
Pastures. Frequent. 
45. Poa pratensis. Lin. Kentucky I»lue Grass. 
Past u res . Com m on . 
