290 



CONTKIBUTIONS FEOM THE NATIONAL HEEBAKIUM. 



DISTRIBUTION. 



Prairies, New York to Manitoba, south to Ohio and Kansas. 

 New York: Head of Seneca Lake (Gray Herb.). 

 Ontario: Squirrel Island, Lake St. Clair, Dodge 17, 20, 62, 84. 

 Ohio: Erie County, Moseley in 1897. 

 Indiana: Lafayette, Dorner 35. 

 Illinois: Naperville, Umbach 1669; Emington, Wilcox 129; Joliet, Sheets 334; 



Wady Petra, V. H. Chase 461, 1455; Knox County, V. H. Chase 1701; Peoria, 



McDonald 17; Champaign, Waite in 1888. 

 Michigan: Hansens Island, Lake St. Clair, Dodge in 1899 (Hitchcock Herb.). 

 Wisconsin: Racine, Wadmond 46; Elkhart Lake, Hill 91 in 1906. 

 Minnesota: Acton, Frost in 1892; St. Cloud, Campbell in 1887; Montevideo, 



Moyer in 1894; Spring Grove, Rosendahl 504, 538. 

 Manitoba: Macgregor, Macoun 



73004; Carberry, Macoun 73003. 

 North Dakota: Fargo, Bolley 



1865; Merrifield, Brannon 10; 



Leeds, Lunell in 1902. 

 South Dakota: Brookings, E. N. 



TOcoz 16, Williams 2228; Lake 



Hendricks, Williams in 1891; 



Simpson Park, Griffiths 836. 

 Iowa: Plymouth County, Leiberg 



in 1878; Armstrong, Cratty in 



1900; Ames, Ball & Sample 



16; Iowa City, Somes 236; De- 

 catur County, Fitzpatrick & 



Fitzpatrich 36; New Albin, Pammel 932; Johnson County, ShimeJc 69. 

 Nebraska: Ponca, Clements 2523. 

 Missouri: Lees Summit, Mackenzie 297; Monteer, Bush 379, 730, 744, 2760; Dod- 



son, Bush 1652; Levasy, Bush 1684. 

 Kansas: Manhattan; Hitchcock 2504, 2518, PL Kan. 571b. 

 This species is listed in the Botany of Stevens's Report a as P. clandestinum, as 

 shown by the specimen, without definite locality, in the National Herbarium. 



Fig. 326.— Distribution of P. leibergii. 



175. Panicum xanthophysum A. Gray. 



Panicum xanthophysum A. Gray, Gram. & Cyp. 1: no. 28. 1834. This was pub- 

 lished in the set of exsiccatae, a printed description in Latin accompanying no. 28, 

 the locality being given as "Pine Plains, near Oneida Lake, New- York." In the 

 Gray Herbarium is a specimen, on the sheet of which is written in Dr. Gray's hand 

 "Oneida Lake, Wood Creek barrens, P. xanthophysum Gray!" This specimen, 

 which we consider the type, is a single culm with an overmature primary panicle, and 

 a small secondary panicle. Dr. Gray apparently neglected to retain for himself a 

 numbered set of this distribution of Graminese. The specimen of no. 28 in the Boott 

 set in Gray Herbarium, and the other specimens of this number which we have seen 

 agree with the above specimen. The species was later described by Gray& in English 

 in a paper on "New or rare Plants of the State of New York." 



Panicum xanthophysum forma amplifolium Scribn. in Brainerd, Jones & Eggleston, 

 Fl. Vt. 104. 1900. "Dry sandy soil, Burlington, Vt. L. R. Jones, collector, August 

 31, 1893." The type, in the National Herbarium, consists of two specimens with 

 overlapping sheaths and blades 1.5 to 2 cm. wide. 



a A. Gray Pac. R. Rep. 12: 49. 1860. &Ann. Lye. N. Y. 3: 234. 1835. 



