Tennessee Flora. 41 



S. vaginsfeflorus (Torr.) Wood. S. minor Vasey. Poverty 

 grass. Sterile, rocky places; very common. August-October. 



S. neglectus Nash. S. vaginseflorus Vasey. With the for- 

 mer. September, October. 



S. Iiidicus (L.) R. Br. Sweet grass. Sandy soils in the 

 Cumberland Mts. and in the oak barrens. June-September. 



CINNA L. 



Cinna arundinacea L. Indian reed grass. Wet, rich wood- 

 lands. O. S. A form smaller throughout is found on Paradise 

 Ridge. August, September. 



C. pendula Trin. On Roane Mountain. L. F. Scribner. 



AGROSTIS L. 



Agrostis alba L. Redtop, herd's grass. One of the princi- 

 pal meadow grasses. Sometimes extensively stoloniferous. 

 July, August. 



A. exarata Trin. O. S. July-September. 



A. EUiotiana Schult. A. arachnoides Ell. Dry, siliceous 

 ground. O. S. May-July. 



A. canina L. White Cliff Springs, Monroe County. July. 



A. rubra L. A. rupestris Chapm. Summit of Roane Moun- 

 tain. July. 



A. intermedia Scribn. Common in damp thickets. O. S. 



A. perennans Tuckerm. Open woodlands. O. S. July- 

 Septeniber. 



A. Novae - Angliae Tuckerm. Along mountain streams, 

 E. Tenn. Scribn. 



A. hyemalis (Walt.) B. S. P. A. scabra Willd. In dry or 

 wet places. A noxious weed, but not frequent. July. 



A. altissima Walt. A. elata Trin. Sandy soil, vicinity of 

 Knoxville. A. Ruth. 



CALAMAGROSTIS Adans. 



Calamagrostis Canadensis Beauv. Blue joint. Roane Mt. 

 Chickering. 



C. cinnoides (Miihl.) Scribn. C. Nuttalliana Steudel. 

 Frog Mts. and -Cumberland Mts. July, August. 



AVENACE^. 



HOLCUS L. 



Holcus lanatus L. Velvet grass. Naturalized in E. Tenn. ; 

 especially frequent in the mountains, in meadows as well as in 

 open grounds. June, July. 



