HITCHCOCK AND CHASE—-NORTH AMERICAN PANICUM. 299 
axis glabrous or pubescent, often viscid, the flexuous branches ascending, spikelet- 
bearing from near the base; spikelets 2.3 to 2.6.mm. long, 1.1 to 1.3 mm. wide, ovate, 
pointed, glabrous or obscurely puberulent; first glume less than one-sixth as long as 
the spikelet; second glume and sterile lemma 
strongly nerved, exceeding the fruit and form- 
ing an abrupt point beyond it; fruit 1.8 mm. 
long, 1 mm. wide, elliptic. 
Autumnal form erect, branching from the mid- 
dle and upper nodes, the branches appressed, 
somewhat longer than the internodes, finally 
bearing fascicled branchlets and forming dense = 
oblong masses along the upper part of the primary 
culm, the sheaths, especially the later ones, 
Fig. 338.—P. scabriusculum. From t i 
i pelepecinuen: densely papillose-hirsute, the flat, reduced blades 
ovate-lanceclate, reduced in length much more 
than in width, the panicles partly or entirely inclosed in the sheaths. 
This species is very variable in the amount of pubescence; even on the same plant 
are often found glabrous and hispid sheaths or glabrous and pubescent blades. Other- 
wise it is an unusually uniform species. 
DISTRIBUTION. 
Moist ground, especially along ditches, streams, and swamps, near the coast, south- 
east Virginia to Florida and os Texas. Ee ane 
New Jersey: ,Atlantic €rty, Long in 1909 (Phila. Acad. Herb.). 
Virernra: Norfolk County, Kearney 1798; Dismal Swamp, Tyler in 1905. 
Norta Carortna: Roanoke Is- 
land, Chase 3235; Wilsons 
Mills, Chase 3101; Wilmington, 
Chase 4600, Hitchcock 595, 
Kearney 270. 
SoutH CaroLina: Orangeburg, 
Hitchcock 438, 1378; Aiken, 
Ravenel. 
GeorGiIA: Bullock County, Harper 
881; Leslie, Harper 410. 
Fioripa: Jacksonville, Curtiss Q, 
4878; Duval County, Curtiss 
3610; Baldwin, Combs 67; 
Washington, Combs 616; without locality, Chapman. 
ALABAMA: Flomaton, Hitchcock 1052,. Tracy 3643; Mobile, Kearney 27, 39; Mobile 
County, Mohr in 1888. 
Mississrerr: Beauvoir, Tracy 4617; Biloxi, Tracy 4569. 
Louistana: New Orleans, Drwmmond (Gray Herb.). 
Texas: Nona, Nealley 38 in 1892; without locality, Nealley in 1885, Wright (Gray 
Herb.). 
~~ 182. Panicum cryptanthum Ashe. 
Fia. 339.—Distribution of P. scabriusculum. 
Panicum eryptanthum Ashe, N. C. Agr. Exp. Sta. Bull.175: 115.1900. ‘‘Collected 
by the writer in swamps at Wilson’s Mill, N. C., in July 1897.’’ The type, in Ashe’s 
herbarium, is a specimen arbitrarily chosen from among four bearing the label, ‘‘ Wil- 
son’s Mill, N. C. July 15, 1897. W. W. Ashe collector,’’ and with the additional 
data, ‘‘In a small swamp on north side of railroad about one mile west of the station.”’ 
The name does not appear upon any of the sheets, but these plants agree with: the 
