178 Trans. Acad. Set. of St. Louis. 



slender petioled, 3-10 cm. long, (5-10 dm. wide, the upper 

 gradually reduced, indistinctly 3-nerved. Involucre obconic, 

 or cylindrical, 10-25 mm. hiojh its bracts 6-15 mm. Ions, 

 linear, glandular, in two series, the outer looser and often 

 wholly herbaceous, the inner with purplish tips. Peduncles 

 erect, stout, short, densely scabrous-pubescent and glandular ; 

 ra3^-flowers 8-10, pistillate, fertile ; rays rose-purple, deeply 

 3-cleft, 1-2 cm. long, sometimes small or none; disk-flowers 

 numerous, perfect, fertile, 5-parted nearly to the filiform 

 tube, purplish; achenes 6-8 mm. long and about 1 mm. 

 thick, linear, very pubescent ; pappus-scales of the disk- 

 flowers 6-8, lanceolate, awned by the excurrent costae, more 

 than half the length of the achene, those of the ray-flowers 

 as many, spatulate, obtuse, very short. Sandy plains and 

 prairies, Nebraska and Kansas to Texas, New Mexico, Colo- 

 rado and Mexico. Summer and autumn. 



As this is the only other species Nuttall collected in Arkan- 

 sas, it may be inferred that this is the Of hake longifolium 

 of Kafinesque. If such should prove to be the case, Rafi- 

 nesque's name is some six years earlier than that of Torrey 

 and Gray. 



Specimens examined: Kansas: American plains, Lat. 

 40, Hall, 1864 (M N) ; Caldwell, Carleton, 340, July, 1891 

 (N); Sm,yth 271, September 10, 1890 (N) ; Arkalon, 

 Kellerman 4, June 28, 1888 (N) ; Carleton, October 23, 

 1892 (N); Garden City, Smyth 171, August 20, 1890 (N) ; 

 Hamilton County, Hitchcock 288, August 3, 1895 (M N); 

 Syracuse, Thompson 76, July 4, 1893 (M N). Indian Ter- 

 ritory: Cimarron Eiver, Mark White 152, 250, July 12, 

 1899 (M); on the False Washita, Palmer 446, 1868 (N); 

 on the Canadian River, Bigeloiv, 1853-54 (N). Colorado: 

 Greeley, Ward, August 3, 1881 (N) ; no locality, Parry 352, 

 1864 (N). New Mexico: Mesilla, Donna Ana County, 

 Troo^on28, June 17, 1897 (M N) ; Las Cruces, Wooton, August 

 22,1893 (N); G. R. Vasey, 1881 (N) ; Roswell, Barle 381, 

 August, 1900 (N);" no locality, Wright 1250, 1851-52 (N). 

 Texas: Millett, Trelease, November 5, 1897 (M); Milano, 

 Joor 54, October 28, year not given (M) ; Big Springs, Tracy 



