498 



APPENDIX. 



[Vol. III. 



[Vol. i: p. 121.] 



[Vol. i: p. 120.] 22b. Panicum 



sphagnicolum Nash. Sphagnum 



Panicum. (Fig. 264b.) 



Panicum sphagnicolum Nash, Bull. Torr. Club, 22: 



422. 1895. 



Culms slender, smooth and glabrous, l}4 -3 long, 

 at length much elongated, dichotomously much 

 branched and declining. Sheaths smooth and gla- 

 brous, or the lower ones pubescent, one half the 

 length of the internodes or less; ligule a short ring; 

 leaves erect, smooth and glabrous on both surfaces, 

 lanceolate, principal nerves 5-7, the primary leaves 

 \ f -2)/ 2 ' long, i // -5 // wide, those on the branches 

 \y^' or less long, concealing the small contracted 

 panicles; primary panicle loose and open, I ^'-3' 

 long, its branches spreading or ascending, the lower 

 S/i'-iYz' long; spikelets on elongated filiform pedi- 

 cels, scattered, y%"-\%. ,f long, oval to obovate, the 

 scales glabrous or sparsely pubescent, the first less 

 than one-half as long as the spikelet, i-nerved, the 

 second and third scales 7-nerved. 



Sphagnum bogs, District of Columbia and southern 

 New Jersey to Florida, west to Texas. June-Sept. 



24a. Panicum lanugindsum Ell. Woolly Panicum. 

 (Fig. 266a.) 



P. lanuginosum Ell. Bot. S. C. & Ga. 1: 123. 1817. 

 Culms, sheaths and leaves villous with 

 spreading hairs, those on the leaves and the 

 upper part of the culm shorter. Culms leafy, 

 tufted, 1 -2}4 tall, erect, at length branched, a 

 smooth ring below each barbed node; sheaths 

 shorter than the internodes; ligule a ring of 

 long hairs; leaves erect, lanceolate, acumi- 

 nate, iK / ~5 / l n g. 2 // -4>^ // broad; panicle 

 ovate, i^ / -4 / long, the axis pubescent, the 

 branches ascending, the larger i / -2 / long; 

 spikelets numerous, broadly obovate, about 

 y%" long, the first scale orbicular, glabrous or 

 pubescent, i-nerved, the second and third 

 scales nearly orbicular when spread out, 7- 

 9-nerved, densely pubescent with spreading 

 hairs. 



Dry sandy soil, southern New Jersey to Flor- 

 ida and Alabama. 



[Vol. i: p. 121.] 25a. Panicum 

 implicatum Scribn. Hairy-panicled 



Panicum. (Fig. 267a.) 

 Culms tufted, erect, io'-iS' tall, very slender, 

 more or less pubescent.at length much branched. 

 Sheaths shorter than the internodes, densely 

 papillose-hirsute , at least the lower ones; ligule a 

 ring of long hairs; leaves erect, lanceolate; Yz'-i' 

 long,i ,,/ -3 // wide.tf/ least the lower ones papillose- 

 hirsute on both surfaces, especially beneath; pani- 

 cle open, ovate, ^-2%' long, its branches widely 

 spreading; spikelets broadly obovate, obtuse, 

 purplish, about % ,f long, the outer 3 scales pu- 

 bescent with short spreading hairs, the first scale 

 nearly one-half as long as the spikelet, broadly 

 ovate, obtuse, i-nerved, the second and third 

 scales orbicular-oval, 7-nerved. 



Dry soil, Maine to New York. Related to P. 

 pubescens I^am., but certainly distinct. 



