106 



CONTKIBUTIONS FKOM THE NATIONAL HEKBAEITJM. 



Fig. 99.— Distribution of P. longifoliurn. 



A specimen from Nicholson, Mississippi, Kearney 380, with spreading panicle 

 branches and spikelets only 2 mm. long is doubtfully referred here. 



DISTRIBUTION. 



Moist sandy ground, Rhode Island and Connecticut to Florida and west to Texas, 

 mostly near the coast. 



Connecticut: Groton, Bissell 11596, Graves 248, 256. 



Rhode Island: Shannock, Moore in 1896. 



New York: New York, Bicknell in 1896; Long Island, Miller in 1873 (both in 



Hitchcock Herb.). 

 New Jersey: Atsion, Chase 3530; without locality, Holmes in 1890. 

 Pennsylvania: Philadelphia, Saunders in 1898, Smith. 

 Delaware: Ellendale, Commons 224, -343, 344. 

 Maryland: Berlin, Novik 421. 

 District op Columbia: Kearney in 



1897, Steele in 1897 and 1898. 

 Virginia: Cape Henry, Hitchcock 



446; Dismal Swamp, Chase 



3662; Virginia Beach, Kearney 



2025. 

 North Carolina : Newbern, 



Kearney 2242; Wilmington, 



Biltmore Herb. 3627, Chase 



4564, Hitchcock 447; eastern 



North Carolina, Ashe; West 



Raleigh, Stanton 1270; middle 



North Carolina, Ashe. 

 Florida: Jacksonville, Curtiss 5576B; Milton, Chase 4318; Bayhead, Combs 644; 



Chipley, Combs 571; Gainesville, Chase 4225; Crystal, Combs 1010; Grasmere, 



Combs 1154, 1168; Bartow, Combs 1180J, 1235. 

 Alabama: Tuskegee, Carver 100, Cullman, Eggert in 1897, Mohr in 1886; Mobile, 



Mohr. 

 Mississippi: Biloxi, Chase 4346, Kearney 220, Tracy 3627, 3860, 6507a; Fontain- 



bleau, Tracy 3858, 3859; Ship Island, Tracy 4563; Waynesboro, Kearney 116. 

 Louisiana: Without locality, Hale (Gray Herb.). 

 Texas: Jefferson, Plank 31; without locality, Nealley in 1885, Wright. 



54. Panicum combsii Scribn. & Ball. 



Panicum combsii Scribn. & Ball, U. S. Dept. Agr. Div. Agrost. Bull. 24: 42./. 16. 

 1901. "Type collected by Robert Combs, No. 583, for 

 whom the species is named, in damp, fertile flat woods at 

 Chipley, Washington County, Florida, August 20, 1898." 

 The type specimen, in the National Herbarium, is a tuft of 

 several culms with mature panicles. 



description. 



Plants like P. longifoliurn in habit; leaves somewhat more 

 clustered at base; sheaths glabrous or pubescent along the 

 margin toward the summit; ligules less than 1 mm. long, 

 sometimes a few longer hairs at the margin, blades aver- 

 aging shorter, rarely 25 cm. long, glabrous or pilose on 

 the upper surface at the base, usually sparsely so; lateral 

 panicles wanting or but one or two, terminal panicles 12 to 20 cm. long, two-thirds 

 to three-fourths as wide, few-flowered, the slender, scattered branches ascending; 



Fig. 100.— P. combsii. From 

 type specimen. 



