MICHIGAN ACADEMY OF SCIENCE. 
221 
JUNCAGINACEAE — ARROW GRASS FAMILY. 
Trigiocliin maritima L. Seaside Arrow Grass. Occasional in marshy 
places and in damp sand. 
Triglochin palustris L. Marsh Arrow Grass. In marshy places on the 
east side. 
ALISMACEAE— WATER-PLANTAIN FAMILY. 
Sagittaria latifolia Willd. Broad-leaved Arrow-head. Occasional in 
marshy places. 
Alisma plantago-aquatica L. water plantain. Common in wet and 
muddy places. 
GRAMINEAE — GRASS FAMILY. 
Digitaria sanguinalis (L.) Scop. Crab Grass. About the village of 
Mackinac Island and on cultivated grounds. 
Panicum capillare L. Old-witch Grass. Noticed about the village and 
on cultivated grounds. 
Echinochloa crusgalli (L.) Beauv. Barnyard Grass. Occasional about 
the village. 
Setaria glauca (L.) Beauv. Foxtail. About the village and on culti- 
vated grounds. 
Setaria viridis (L.) Beauv. Green Foxtail. Occasional about the vil- 
lage and on cultivated grounds. 
Cenchrus carolinianus Walt. Sandbur. Noticed about the village. 
Phalaris arundinacea L. Reed Canary Grass. In wet marshy places 
on the east side. 
Hierochloe odorata (L.) Wahlenb. Holy Grass. In damp meadow-like 
places on the east side. 
Milium effusum L. Millet Grass. In rich woods. 
Oryzopsis asperifolia Michx. White-grained Mountain Rice. Frequent 
in dryish woods. 
Muhlenbergia racemosa (Miclix.) BSP. Marsh Mulilenbergia. Borders 
of wet open places on the east side. 
Phleum pratense L. Timothy. In the village and throughout the island. 
Agrostis alba L. Red Top. Bordering damp open places. 
Calamagrostis canadensis (Michx.) Beauv. Blue-joint Grass. In marshy 
places on the east side. 
Danthonia spicata (L.) Beauv. Common Wild-oat Grass. Frequent in 
dry open or slightly shaded places. 
Dactylis glomerata L. Orchard Grass. More or less throughout the is- 
land. 
Poa annua L. Low Spear Grass. In streets and lawns of the village. 
Poa compressa L. Canada Blue Grass. In dry open or slightly shaded 
places throughout. 
Poa triflora Gilib. False Red Top. In wet open ground on the east 
side. 
Poa pratensis L. June Grass. In open or slightly shaded ground 
throughout. 
Poa debilis Torr. Weak Spear Grass. Occasional in open woods. 
Glyceria nervata (Willd.) Trim Fowl Meadow Grass. In wet meadow- 
like open or slightly shaded places. 
