238 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



PHALARIDE.t. 



Phalaris arundinacea Linn. Grand Island, altitude 1,872. Common in 

 alluvial flood plains of Platte River. A valuable early grass. No. 25. Big 

 Horn, Sheridan County. Common also in low grounds, Goose Creek, 

 No. 24. 



Savastana odorata Scribner. Dome Lake, Sheridan County, altitude 

 9,200. Abundant on flats in vicinity of moraines, forming in many instances 

 a fine turf. No. 83. Rapid Creek, Sheridan County, altitude 7,500. Low 

 marshy ground. No. 82. 



AGROSTIDE.E. 



Aristida fasciciilata Torr. Alma, altitude 1,950. Common on prairies, 

 dry hills and flats. No. 32. Grand Island, altitude 1,872. Dry sandy soil 

 and hills. No. 185. Broken Bow, altitude 2,480. Dry hills, common. No. 

 33. New Castle, altitude 4,019. Common on dry hills. No. 31. 



Stipa co)nata Trin. and Rupr. Edgemont, altitude 3,415. Common on 

 dry hills. No. i. New Castle, altitude 4,019, Mostly small plants, dry 

 sterile hills. No. 2. Sheridan, altitude 3,729. Dry hills, common. Nn. 160. 



6". Cohttiibiana Macoun. Along the edges of the timber, and in the Parks, 

 Sheridan County. Al)Ove Big Horn on Dome Lake Road, altitude 5,500 to 

 7,000. A large and ])eautiful grass. No. 193. 



S. Nelsoni Scribner. Sheridan County above Big Horn, Dome Lake 

 Road and in Geranium Park, altitude 7,500. A handsome species. No. 

 19-I. 



S. viridula Trin. Alma, altitude 1,750. Common, prairies and flood 

 plains of Republican River. No. 16. New Castle, altitude 4,019. Common 

 along roadsides and in canons. No. 3. Sheridan Road, altitude 3,712. In 

 flood plains of Little and Big Goose Rivers, common. No. 4. 



Erioconia cuspidata Nutt. New Castle, altitude 4,019. Dry sterile soils. 

 No. 66. 



Oryzopsis asperifolia Michx. West branch of the Big Goose River, and 

 on the road to Sheridan, altitude 8,500. In open woods. No. 72. 



O. exigua Thurber. Dome Lake, Sheridan County, altitude 9,500. 

 No. 92a. 



O. micrantha Thurber. New Castle, altitude 4,050. Dry woods. No. 

 147, No. 88. 



Phleuin alpinum Linn. The species grows in wet marshy places, forming 

 a fine turf. No. 12. Sheridan County, Big Goose, altitude 8,500. In low, 

 wet places. No. 10. On road to Shoshone Basin, No. 162. 



Phletnn alpinum van Scrihneriamnn Pammel. Culms 5-6 dm. high, the lower 

 leaves 10-25 cm. long ; spikes 3-4 cm. long. Spikelets, including the awns 

 of the empty glumes, nearly 6 mm. long. This variety differs from the spe- 

 cies in its larger and more robust habit of growth. It forms compact masses 

 and grows in rather dry red clay soil. Sheridan County, Wyoming, Geran- 



