569 Nash : The uichotomous Panicums 



second and third scales 7-nerved, about equal in length, the fourth 

 scale white, a little longer than the third, about 1.6 mm. long and 

 0.8 mm. wide. 



Type collected by S. M. Tracy, at Biloxi, Mississippi, Septem- 

 ber I, 1898, no. 4580. In habit and general appearance much 

 resembling P. piibescens, but the ciliate blades with the upper sur- 

 face glabrous at once separate it. The specimen above described 

 is the late state and has the panicle included ; the early form of the 

 plant will probably be found to have an exserted primary panicle. 



Panicum Glutei 



A tufted perennial, glabrous, with the exceptions noted below. 

 Culms rather stout, 6-8 dm. tall, at length branched : leaves 4 or 

 5 ; sheaths rather loose, minutely pubescent at the apex and 

 usually more or less ciliate on the exterior margin, the exterior 

 basal ones pubescent; ligule a dense ring of hairs about 0.3 mm. 

 long ; blades firm, ascending, often appearing as if erect in press- 

 ing, lanceolate, smooth on both surfaces, rough on the margins, 

 the lower and larger 7-14 cm. long, 7-12 mm. wide, the basal 

 blades ovate-lanceolate, 3-4 cm. long and 10-13 mm. wide, long- 

 ciliate on the margins : panicle considerably exserted, broadly 

 ovate, 6-10 cm. long, its ascending branches smooth, the larger 

 ones 4-6 cm. long: spikelets oval, acutish, about 2.3 mm. long 

 and about 1.3 mm. wide, the first scale broadly ovate, obtuse or 

 somewhat acute, i -nerved, glabrous or nearly so, the second and 

 third scales densely pubescent with very short ascending hairs, 

 9-nerved, the second one shorter than the third and usually a little 

 shorter than the fourth, the fourth scale yellowish, oval, about 2 

 mm. long and about 1.2 mm. wide. 



Pine-barrens of southern New Jersey. Collected by Mr. W. 

 N. Clute, after whom I take pleasure in naming it, on a trip from 

 Tuckerton to Atsion, July 3-6, 1899. A most distinct species. 



Panicum curtifolium 



A tufted perennial, glabrous, with the exceptions noted below. 

 Culms slender, weak, 2-3 dm. tall, finally much branched : leaves 

 3 or 4 ; sheaths less than one half as long as the internodes, usually 

 about one third as long, sparsely pubescent with long weak spread- 

 ing hairs ; ligule a dense ring of hairs about 0.3 mm. long ; blades 

 widely spreading, lanceolate, minutely serrulate and rough on the 

 margins, a few long hairs on the upper surface just back of the 

 ligule, the culm blades 1.5-3 cm. long, 3-4.5 mm. wide, the basal 

 leaves 4-5 cm. long : panicle considerably exserted, broadly ovate, 



