200 



Scleria pauciflora Mulil., var. Elliottii Wood. Colbert. Low ground on prairies. 



Not ('(iiiiiiion. June. No. 16. 

 Caiex lupulina Niuhl. Ranks of Sans Bois Creeli. July. No. 95. 

 Carex luiida Walil. With the last. July. No. 96. 



GRAMINE^. 



Tripsacum dactyloides L. Prairies along Caeli Creek near Fort Sill. July. 



No. 1G2. 

 Andropogon provincialia Lam. Rocky woods near Ilartsliorn. Common evory- 



whero. September. No. 3t7. 

 Andropogon saccharoides Swartz. Cliickasaw Nation, and near Fort Sill along 



hiuiks (if Cash Creok. Common throughout. July. Nos, 130, 179. 

 Andropogon scoparius Mx. liocky woods in Sans Bois Mountains. Not collected 



elsewhere. August. No. 331. 

 Paspalum Floridanum Mx. Rich soil along streams in Sans Bois Mountains- 

 August. No. 276. 

 Paspalum laeve Mx., var. angustifoliuni Vasey. Shawnee Tlilla. Low ground 



along creeks. August. No. 284. 

 Panicmn agrostoides Muhl. Low ground along Graines Creek and wet borders of 



small lake near McAloster. Common oast. August. Nos. 279, 290. 

 Panicum anceps Mx. Low ground on Gaines Creek. Common oast. August- 

 No. 278. 

 Panicum capiUare L. Quanah Mountain. Common m rocky hills in rich loamy 



soil. July. No. 1^8. 

 Panicnm fiUforrae L. Sans Bois Mountains. Clay and gravelly soil. August, 



Nos. ,327, 331. 

 Panicum hlaus Ell. McAlester to Stonewall. Frequent. July. No. 127. 

 Panicum sanguinale L, Gravelly soil in Shawnee Hills. Common east. August. 



No. 285. 

 Panicum virgatum L. Fort Sill and Shawnee Hills. Common throughout, along 



streams and on rocky open slopes. August. Nos. 274, 283. 

 Panicum viscidum Ell. Atoka. Low ground. Infrequent. June. No. 65. 

 Cenchrus tribuloides L. Colbert. Throughout, on sandy prairies. Known 



as ''sand burs" or "grass burs." June. No. 33. 

 Aristida dichotoma L. Gravelly woods in Sans Bois Mountains. The only locality 



noted. August. No. 335. 

 Aristida oligantha Mx. Quanah's ranch. Gravelly open woods near creek banks. 



July. Nos. 202, 223, 266. 

 Aristida purpurea Nutt., var. Fendleri Vasey. Gravelly limestone hill west of 



Stonewall. July. No. 136. 

 Aristida purpurea Nutt., var. Hookeri Trin. Fort Sill. This is the characteristic 



grass in prairie-dog towns. July. No. 182. 

 Muhlenbergla glomerata Trin. Rocky bills near Quanah's ranch. Common in 



Wichita Mountains. July. No. 238. 

 Muhlenbergla glomerata Trin., var. ramosa Vasey. The commonest grass, on 



rocky slopes. August. No. 251. 

 Cinua arundinacea L. Common on low ground in Sans Bois Mountains. August. 



No. 291. 

 Buchloe dactyloides Engelm. Cash Creek and Fort Sill. Usually found in 



prairie-dog towns. July. Nos. 164, 180. 

 Boutelc«a hirsuta Lag. Dry prairies near Fort Sill. Much more frequent than 



Buffalo gr;iss, .and with a siuiilar range. July. No. 181. 

 Bouteloua racemosa L,^. In gravelly soil near Stonewall. July. No. 129. 

 Triodia cuprea Jacq, Creek banks, near Fort Sill. Infrequent there, but common 



eastward. August. No. 270. 



