HITCHCOCK AND CHASE NOETH AMEEICAN PANICUM. 303 



District op Columbia: Chase in Kneucker Gram. Exs. 556, Hitchcock 422, 425, 



568, Kearney in 1897, Ward2, 7, 9, Williams 3, 4, 10. 

 Virginia: Great Falls, C^ase 3704, Four-Mile Run, PoHarcZ 180; Norfolk, Kearney 



299, 1029; Portsmouth, Noyes 103; Virginia Beach, Pollard & Maxon in 1900; 



Munden, Mackenzie 1708; Dismal Swamp, Chase 3679, Tyler in 1905; Clifton 



Forge, TidestromA. 

 West Virginia: Summers County, Morris 977; Tihha 'Run, Sheldon 566; Fayette 



County, Kellerman 6901. 

 North Carolina : Roanoke Island, Chase 3220; Wilmington, Hitchcock 424:, 1461; 



Chapel Hill, Ashe, Chase 3051, 3064; Magnetic City, Wetherby 58; Lenoir, 



Hitchcock 565. 

 South Carolina: Orangeburg, Hitchcock 1388; Pelzer, House 2430; Clemson 



College, House2106; Aiken, Hitchcockb66. 

 Georgia: Augusta, Cuthbert 427, 1163, Kearney 207; Stone Mountain, Eggert 44, 



Hitchcock 423, 567, 1353; Thomson, BartleUl458, 1504. 

 Florida: Chattahoochee, Tracy 3629 (Field Mus. Herb.). 

 Kentucky: Harlan County, Kearney 34 in part, 54 in part. 

 Tennessee: Polk County, Chambliss 14, 88, Kearney 324; Knoxville, Smith in 



1895, Scribner in 1891; Nashville, Gattinger in 1882. 

 Alabama: Pisgah, Chase 4473; Scottsboro, Chase 4498; Auburn, Hitchcock 1323, 



1327, Tracy 3747, 3756; Tuskegee, Ball in 1901. 

 Mississippi: Enterprise, Tracy 3275; Meridian, Tracy 326S. 



*/ 184. l^anicum commutatum Schult. 



Panicum nitidum majus Pursh, Fl. Amer. Sept. 1 : 67. 1814. No specimen nor 

 locality is cited. Among the Pursh plants in Kew Herbarium is a sheet upon which 

 are mounted a specimen of P. commutatum and one of P. yadkinense. Above the first 

 is a label reading "Panicum nitidum Mx.," and above the latter one reading "Panicum 

 nitidum major." Since Pursh's description of the variety is "omnibus partibus 

 multo majus, " it would appear that the labels have been transposed, and that the 

 specimen of P. commutatum should be taken as the type of variety majus. 



Panicum nervosum Muhl.; Ell. Bot. S. C. & Ga. 1: 122. 1816, not Lam. 1797. 

 Elliott states that the species "grows in dry shaded soils," but no definite locality is 

 given. The type specimen, in the Elliott Herbarium, consists of portions of two 

 culms, the panicle of one destitute of spikelets. The culms are glabrous, the sheaths 

 glabrous or minutely puberulent between the nerves, densely puberulent on the back 

 at the summit, blades papillose-ciliate at base, otherwise glabrous. The accom- 

 panying label reads: "Panicum nervosum Muhl. Hab. Car. et Geor:" This species 

 was also described as P. nervosum by Muhlenberg,^ but there is no specimen to rep- 

 resent this in the Muhlenberg Herbarium. In this description the ligule is said to 

 be "barbaeform," and the species "P. aquatico^ affine." This throws some doubt 

 on the identity of Muhlenberg's specimen with the type of P. nervosum Muhl.; Ell. 

 in Elliott's Herbarium. But the statement that the leaves are lanceolate and ciliate 

 at base, and that the panicle branches are numerous and spreading shows that the 

 species has no close affinity to his P. aquaticum, as suggested by Muhlenberg. Since 

 no specimen can be found by which to interpret Muhlenberg's description, it is here 

 assumed that his type is the same as Elliott's and that the statement concerning the 

 ligule is an error. 



Panicum commutatum Schult. Mant. 2: 242. 1824. Based on "P. nervosum 

 Muhlenb. Descr. ub. p. 117" [error for 116], the name presumably changed because of 



« Descr. Gram. 116. 1817. ^ This is Sacdolepis striata (L.) Nash. 



