144 SIXTEENTH REPORT. 



Phalaris canariensis L. Canary Grass. — Occasional on roadsides and in 

 waste places about towns and villages. 



Phalaris arundinacea L. Reed Canary Grass. — Frequent and often 

 abundant in wet marshy places. 



Phalaris arundinacea picta L. Ribbon Grass. — Frequently escaping from 

 cultivation into wet places and persisting. 



Hierochloe odorata (L.) Wahlenb. Vanilla Grass. Seneca Grass. — Fre- 

 cjuent in moist open ground on the delta islands of St. Clair River. Basal 

 leaves used by the Indians of Walpole Island to make small ornamental boxes 

 and baskets. 



Milium effusum L. Tall Millett-Grass. — Occasional in damp open woods. 



Oryzopsis pungens (Torr.) Hitchc. Slender Mountain Rice. — Frequent in 

 dry and sandy ground. Common on the sand dunes at Port Franks. 



Oryzopsis asperifolia Michx. White-grained Mountain Rice. — Frequent 

 in open woods and on shaded hillsides. 



Oryzopsis racemosa (Sm.) Ricker. Black-fruited Mountain Rice. — On 

 shaded sides of sand dunes at Port Franks. Not noticed elsewhere. 



Stipa comata Trin. and Rupr. Western Stipa. — Plentiful in dryish 

 ground on Squirrel Island, one of the delta islands of St. Clair River. Prob- 

 ably from the west. 



Stipa spartea Trin. Porcupine Grass.^ — Occasional on shaded shores of 

 Lake Huron. 



Aristida purpurascens Poir. ArroAv-grass. — Abundant in spots in dry 

 ground on Scjuirrel Island. 



Muhlenbergia sylvatica Torr. Wood Muhlenbergia. — Occasional in damp 

 woods and along shaded banks of streams. 



Muhlenbergia mexicana (L.) Trin. Meadow Muhlenbergia. — Occasional 

 in waste places and along shaded banks of streams. 



Muhlenbergia racemosa (Michx.) BSP. Marsh Muhlenljergia. — Frequent 

 on borders of marshes, in moist meadows and low ground. 



Muhlenbergia shreberi J. F. Gomel. Dropseed. Nimble Will. — In dry 

 woods near Lake Huron shore, along roads, and in dry waste places. 



Brachyelytrum erectrus (Shreb.) Beauv. Brachyelytrum. — Frequent in 

 dry open woods in northern part of county. 



Phleum protense L. Timothy. — Common as an escape from cultivation. 



Alopercurus geniculatus aristulatus Torr. Marsh Foxtail. — Common in 

 shallow water and wet places. 



Sporobolus vaginiflorus (Torr.) Wood. Sheathed Rush Grass. — Frequent 

 in sterile fields and waste places. 



Sporobolus neglectus Nash. Small Rush Grass. — Frequent in dry and 

 poor ground. 



Sporobolus cryptandrus (Torr.) Gray. Sand Dropseed. — Common in dry 

 and sanely ground and in sand along the lakeshore. A good sand-binder. 



Agrostis alba L. Red-top. White Bent Grass. — Common in damp 

 meadows and fields. Often cultivated. 



Agrostis hyemalis (Walt.) BSP. Hair Grass. — Frequent in dry or moist 

 open ground. 



Agrostis perennans (Walt.) Tuckerm. Thin Grass. — Occasional in low 

 open ground or damp shaded places. T. C. Wheatley. 



Calamovilfa longifolia (Hook.) Hack. Long-leaved Reed Grass. — Com- 

 mon and often very abundant on drifting sand along the Lake Huron shore. 

 One of the very best sand-binders. 



