GRIFFITHS — THE GRAMA GRASSES. 375 



HERBARIUM SPECIMENS. 



Arizona: Jones 540, Bowie. Lemmon 4639, 4637, and 4640, S. E. Arizona; 3175. 

 Sulphur Spring Valley. MacDougal 616, Beaver Creek. Tourney 26, Prescott, 

 Griffiths 1865, Dragoon Mountains; 1948, Pearce; 1809, Rincon Mountains; 3375 

 and 3371, Santa Rita Mountains. Griffiths & Thornier 26 and 222, Santa Rita 

 Mountains. Hitchcock 3700, Patagonia; 3732, Benson. 



Colorado: Williams 2117, Colorado Springs. Rydberg 2360, Meadow Park. Hitch- 

 cock 2270, Ouray. 



Florida: Simpson (December, 1891). Garber (November, 1878). Combs & Baker 

 1105, Orange County. Baker 33, Orange County. 



Illinois: Patterson 590, Oquawka. Wilcox 58, on Mississippi River; 41, Aurora; 

 63, Manito. Gleason 1003, Havana. 



Iowa: Ball 116, Ames. 



Kansas: Smyth 78, Greensburg. Shear 147 and 702, Osborne. Norton 908, Riley 

 County. Thompson 125, Syracuse. 



Missouri: Bush 389a, Atchison County. 



Nebraska: Rydberg 1552, near Mullen. Morris 434a. Williams 3008, Weeping Water. 

 Clements 2738, Pishelville. Elmer 133, Crete. 



New Mexico: Wooton 419 and 1098, Organ Mountains. Vasey 101, Organ Mountains. 

 Metcalfe 754, Bear Mountains. Plank 19, Socorro. Greene 403, Silver City. 

 Hitchcock 3790, Organ Mountains. Standley 4977, San Miguel County. Fendler 

 m 951 of 1847. 



South Dakota: Thornier 242, Sioux Falls. Rydberg 1135, Hot Springs. 



Texas: Riggs 66, Marshall. Lindheimer 731 (Fasc. IV). Jermy 781, Gillespie 

 County. Nealley 353 and 93, Santa Ana. Letterman, San Antonio (1882). Buck- 

 ley (1881). Heller 1878, Kerrville. Reverchon 4216 and 1153, Dallas; 4, Comanche 

 Peak; 4089, Wood County. Bailey 740, Guadalupe Mountains; 393, Chisas Moun- 

 tains. Tracy 8205, Dallas; 8221, Colorado; 8213, Weatherford; 8214, Big Springs; 

 8205, Fort Worth. Ball 994 and 893, Chillicothe. 



Mexico: Conzatti 2013, State of Oaxaca. Schaffner 1018, San Luis Potosi; 158, Valley 

 of Mexico. Pringle 409, Chihuahua; 11215, Tula. Wilkinson 347, Santa Eulalia 

 Mountains. Brandegee 25, Cape Region, Lower California; 11, Sierra de Laguna, 

 Lower California. Palmer 405, Saltillo; 807, Durango. Parry & Palmer 943, San 

 Luis Potosi. Nelson 6246. Pacheco, Chihuahua. Rose 1904 and 3293, Territory 

 of Tepic; 2588, State of Jalisco. 



7. Bouteloua gracilis (H. B. K.) Lag. 



Actinochloa ciliata Willd.; Beauv. Ess. Agrost. 41. 1812. (See Chondrosium cilia- 

 turn.) 



Chondrosium ciliatum Willd.; Beauv. Ess. Agrost. 158. 1812. Beauvois lists this 

 name in the index, basing it upon the above manuscript name of Willdenow. In 

 Beauvois's personal copy of his Essai, a he has written in the index in his own hand 

 that this is C. gracile H. B. K. 



Chondrosium gracile H. B. K. Nov. Gen. & Sp. 1 : 176. pi. 58. 1816. The cited plate 

 and description, together with a specimen in Willdenow's herbarium, "ex herb. Hum- 

 boldt ex herb. Kunth" leave no doubt in my mind that this is what in this country 

 we have long called B. oligostachya. It is true that Kunth figures a single-spiked plant, 

 which is the uncommon form. It is rather curious that Humboldt and Bonpland did 

 not collect the more common form, but not nearly so curious as it would have been if 

 they had not collected this widely distributed species at all. Kunth also figures a 

 single-spiked form of B. hirsuta, though this is the less common form of that species. 



a This copy is now in the library of the U. S. Department of Agriculture. 



