﻿84 Nash : New or noteworthy American Grasses 



mm. long, the outer 3 scales membranous, the first scale ovate, 

 acute or acutish, about one-half as long as the spikelet, 1 -nerved, 

 pubescent, second and third scales 9-11 -nerved, densely pubescent 

 with long spreading hairs, the fourth scale chartaceous, almost or- 

 bicular, enclosing a palet of equal length and similar texture. 



Collected by Mr. E. P. Bicknell in sandy soil at Wild wood, N. 



J., May 30 and 31, 1897. This most distinct species is allied to 



P. ncuranthum and P. angustifolium . It affords me great pleasure 



to name this interesting grass in honor of Hon. Addison Brown, 



president of the Torrey Botanical Club. 



Panicum cognatum Schultes, Mant. 2: 235. 1824. 



Panicum divergens Muhl. Descr. Gram. 1 20. 1 8 17. Not H.B.K. 

 1815. 



Panicum autumnale Bosc; Spreng. Syst. 1 : 320. 1825. 



The name of Bosc, hitherto applied so generally to this plant, 

 must give way to that of Schultes, published one year earlier, and 

 based on the P. divergens of Muhlenberg, which, in turn, is in- 

 validated by the previous publication of H.B.K. Muhlenberg's 

 description clearly indicates this plant. The earlier name of 

 Walter, P. nudum, is accompanied by so poor and inadequate a 

 description that its reference to this plant would be mere assump- 



tion. 



Walter's description, "fo/iis 



is quite leafy. 



m 



' Panicum Eatoni sp. nov. 



Panicum nitidum, forma densifiomm, Rand & Redfield, Fl. Mt. 

 Desert, 174. 1894.? Not P. densiflorum Willd. 1825. 



Smooth and glabrous ; culms 4-10 dm. tall, erect, at length 

 dichotomously branched and swollen at the nodes ; sheaths much 

 shorter than the internodes, usually more or less ciliate on the 

 margins; hgule a ring of long hairs; leaves erect, lanceolate, 

 acuminate 4-10 cm. long, 3-10 mm. wide; panicle finally long- 

 exserted dense and contracted, 7-13 cm. long, 3 cm. or less broad, 

 its branches erect-ascending ; spikelets oval, about 1.6 mm. long, 

 acutish, the first scale from one-fourth to one-third as long as the 

 spikelet, glabrous, 1 -nerved, the second and third scales broadly 

 oval when spread out, 7-nerved, densely pubescent with spreading 

 hairs the fourth scale chartaceous, at length indurated, about 13 

 mm. long, oval, enclosing a palet of equal length and similar tex- 

 ture. & 



