Vol. III.] 



APPENDIX. 



499 



[Vol. i: p. 121.] 25b. Panicum Colum- 



bianum Scribn. American Panic-grass. 



Short-leavecl Panicum. (Fig. 267b.) 



Panicum Columbianum Scribn. Bull. U. S. Dept. 

 Agric. Div. Agrost. 7: 78. 1897. 



Culms tufted, erect, softly pubescent, 8'-2 tall, at 

 length dichotomously branched, the branches erect. 

 Lower sheaths pubescent, the upper glabrous, the 

 primary one- half as long as the internodes; ligule 

 a ring of short hairs; leaves lanceolate, erect, thich- 

 ish and firm, glabrous above, the lower ones more 

 or less pubescent beneath, the primary xYz'-iyi' 

 long, 2 // -3 // wide, those on the branches smaller; 

 panicle small, ovate, \ , -\% f long, its branches as- 

 cending; spikelets broadly obovate, a little more 

 than %" long, the outer 3 scales densely pubescent 

 with spreading hairs, the first scale about one-half 

 as long as the spikelet, i-nerved, the second and 

 third scales 7-nerved. 



Fields and open woods, Massachusetts to North 

 Carolina, west to Tennessee and Alabama. June-Sept. 



[Vol. i: p. 121.] 25c. Panicum Eatoni 



Nash. Eaton's Panicum. (Fig. 267c. ), ', 



Panicum Eatoni Nash, Bull. Torr. Club, 25: 84. 1898 

 Smooth and glabrous. Culms i>^ -3^ 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; ligule a ring of long hairs; leaves erect, 

 lanceolate, acuminate, \yi'-\ f long, l% // -$ ,/ wide; 

 panicle finally long-exserted, dense and contracted, 

 3 / ~5 / long, i% / or less broad, its branches erect-as- 

 cending ; spikelets oval, about %" long, acutish, 

 the first scale about one-third as long as the spike- 

 let, pubescent, i-nerved, the second and third scales 

 broadly oval when spread out, 7-nerved, densely 

 pubescent with spreading hairs. 



Along the coast, in damp or wet places, Maine to 

 New York. May-Aug. 



[Vol. i: p. 121.] 25CL Panicum tsugetorum 



Nash. Hemlock Panicum. (Fig. 2670".) 

 P. tsugetorum Nash, Bull. Torr. Club, 25: 86. 1898. 



Culms and sheaths pubescent with short oppressed 

 or ascending hairs intermixed toward the base with 

 longer ones. Culms tufted, i% or less tall, somewhat 

 slender, at length much branched and decumbent or 

 prostrate; sheath shorter than the internodes; ligule 

 a ring of hairs about yi" long; leaves erect or ascend- 

 ing, firm, lanceolate, 5-7-nerved, minutely appressed- 

 pubescent beneath, smooth and glabrous above, or the 

 upper primary leaves sometimes with a few long erect 

 hairs, the primary leaves i/^ / ~3 / long, 2^ // -4 // wide, 

 th ose on the branches smaller and partly concealing th e 

 small panicles; primary panicles broadly ovate, 1 x / 2 '- 

 7.y 2 f long, the branches spreading-ascending; spikelets 

 broadly obovate, about y%" long, the outer 3 scales 

 pubescent, with short spreading hairs, the first scale 

 1-3-nerved, the second and third scales 7-9-nerved. 

 Dry soil in hemlock woods, Connecticut and New York. 



