Genus 17. 



GRASS FAMILY. 



53. Panicum Owenae Bicknell. Mrs. Owen's 

 Panic-grass. Fig. 363. 



Panicum Owenae Bicknell, Bull. Torr. Club, 35: 185. 

 1908. 



Culms tufted, erect or ascending, 6'-i° tall, villous- 

 puberulent below, later branched, the branches crowded 

 at the base ; leaves 2 or 3 ; sheaths puberulent and often 

 pilose ; ligule a ring of hairs i" long or less ; blades on 

 the culm erect, up to 3-4' long, ij" wide or less, gla- 

 brous above, appressed-pubescent beneath, the basal 

 blades shorter and broader; panicle up to 2V long, 

 the axis and the ascending or nearly erect branches 

 puberulent; spikelets nearly 1" long, oval, densely 

 pubescent with spreading hairs. 



Sandy places, Nantucket, Mass. June-Sept. 



54. Panicum tennesseense Ashe. Tennessee 

 Panic-grass. Fig. 364. 



P. tennesseense Ashe, Journ. E. Mitch. Sci. -Soc. 15 : 

 52. 1898. 



Culms tufted, io'-2° tall, slender, ascending, papil- 

 lose-hirsute with long spreading hairs, finally much- 

 branched and prostrate and forming broad mats; 

 sheaths densely papillose-hirsute with long spread- 

 ing hairs; ligule 2" long or more; blades ii'-4' long, 

 zi"-S" wide, the upper surface glabrous or with a 

 few long scattered hairs at the base, the lower sur- 

 face densely and softly pubescent, the blades on the 

 branches much shorter and spreading; panicle iV-a' 

 long, ovate, its branches ascending; spikelets I" 

 long or a little more, about i as wide, elliptic or 

 obovoid, strongly pubescent with long spreading 

 hairs. 



In moist ground or in woods, Maine to Minnesota, 

 south to Georgia and Texas. July and Aug. 



55. Panicum lanuginosum Ell. * Woolly 

 Panic-grass. Fig. 365. 



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

 Panicum auburne Ashe, Bull N. C. Exp. Sta. 17s : 

 US- 1900. 



Culms, sheaths and leaves villous with spread- 

 ing hairs, those on the leaves and the upper part 

 of the culm shorter. Culms leafy, tufted, i°-24° 

 tall, erect, at length branched, a smooth ring 

 below each barbed node; sheaths shorter than 

 the internodes ; ligule a ring of long hairs ; blades 

 erect, lanceolate, acuminate, ii'-s' long, 2"-4$" 

 broad; panicle ovate, 1F-4' long, the axis pubes- 

 cent, the branches ascending, the larger l'-2' long; 

 spikelets numerous, broadly obovate, from a little 

 less than I" to nearly 1" 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 Florida, 

 Louisiana and Texas. July and Aug. 



