SHORE OF LAKE HURON 23 



Oryzopsis pungens (Fair.) Hitchc. Slender mountain rice. Dry open 

 ground from Bay County to Mackinac Island, Mackinac County. 

 Frequent. 



Oryzopsis asperifolia Michx. White-grained mountain rice. Dryish 

 open or partially shaded ground. Frequent throughout. 



Stipa spartea Trin. Porcupine grass. In sand}^ ground near Linwood, 

 Bay County. Plentiful near the sandy beach at this place. 



Muhleribergia racemosa (Michx.) BSP. Marsh muhlenbcrgia. Dam}) 

 open ground with other grasses. Frequent throughout. 



Brachyelytrum erectum (Schreb.) Beauv. Bearded short-husk. Rich 

 woods. Frequent throughout. 



Phleiwi prepense L. Timothy. Along roads and in waste places. 

 Apparently introduced. Plentiful throughout. 



Alopercurus geniculatus aristulatus Torr. Floating foxtail. In very 

 wet places near Linwood, Bay County. Plentiful. Probably frequent 

 throughout. 



Sporobolus cryptandrus (Torr.) Gra}\ Sand drop-seed. On and near 

 sandy beach of Lake Huron. Frequent throughout. 



Agrostis alba L. Red top. Damp rich meadow-like ground and often 

 abundant in damp sand. Plentiful throughout. 



Agrostis hyemalis (Walt.) BSP. Hair grass. Dry or moist open 

 ground. Frequent throughout. Plentiful on jack pine plains in Presque 

 Isle, Montmorency, Oscoda and Ogemaw counties. 



Calamovilfa long i folia (Hook.) Hack. Long-leaved reed-grass. < )n 

 the sandy beach of Lake Huron, usually above the wave line. An ef- 

 ficient sand binder against the action of winds. Frequent throughout. 

 Seldom abundant. 



Calamagrostis canadensis (Michx.) Beauv. Blue-joint grass. In wet 

 open marshy places. Often abundant throughout. 



Ammophila arenaria (L.) Link. Sea sand-reed. In spots throughout 

 on the sandy beach of Lake Huron. Often abundant below the wave 

 line. One of the best known sand binders against the action of both 

 wind and wave. 



Dcschampsia flexuosa (L.) Trin. Common hair grass. Near Au Sable, 

 Iosco County. In dry shaded ground. Noticed as frequent throughout. 



Deschampsia caespitosa (L.) Beauv. Tufted hair-grass. Wet open 

 ground on Bois Blanc Island. Apparently infrequent. 



Danthonia spicata (L.) Beauv. Common wild oat grass, Dry sandy 

 open ground. Common throughout. 



Pfiragmites communis Trin. Reed. Margins of swamps and in marshy 

 ground. Frequent throughout. 



Eragrostis pilosa (L.) Beauv. Tufted eragrostis. Sandy open ground. 

 Frequent near cities and villages. 



