354 The Ohio Naturalist. [Vol. XIV, No. 8, 



26. Panicum xanthophysum Gr. Slender Panic-grass. A 

 tufted, yellowish-green ascending jjercnnial 1 to 2 feet tall, simple. 

 Sheaths loose, sparing!}' i)apillose-pubescent ; ligule minute ; lea\'cs 

 3 to G inches long, j to f inch wide, often widest at the middle, 

 strongly nerved, glabrous excejjt near the ciliate base; panicle 

 short to long cxscrtcd, few flowered, branches erect; spikclets | 

 inch long, or slightly more, obovate, turgid, pubescent, or rarely 

 glabrous; cuter empty glume about ^a as long as the spikelet, 

 second em])ty glume and Icinma of the sterile flower cqiial. Dry 

 soil. Rare. I>akc county. 



27. Panicum ashei Pear. A.she's Panic-grass. An erect, 

 stiff, usually sparingly branched, purplish jjcrennial, in loose 

 clumps 10 to 20 inches high. Sheaths short-ciliate on the margin, 

 pubescent, shorter than the internodes; leaves 2 to o}^ inches I'mg, 

 j^ to J-2 inch wide, rigid, spreading or ascending, glabrous, ciliate 

 near the base; panicle 2 to 4 inches long, branches ascending; 

 spikelets jmrplish, a little more than | inch long, obtuse; outer 

 empty ghmie minute. Dry woods. Cuyahoga, Lake, TrumljuU, 

 Fairfield. 



2<S. Panicum commutatum Schultes. Variable Panic-grass. 

 A stout, erect, i)v.'rennial, glaljrous, except for the puberulent nodes, 

 <S to 30 inches high, dichotomously branched above. vSheaths 

 glabrous or pubenilent toward the summit, ciliate on the margin, 

 sheaths generally shorter than the internodes; leaves firm, corclate 

 clasping, glal)rous or puberulent 2 to 4^^ inches long, | to f 

 inches wide; jjanicle 2 to 5 inches long, spreading; spikelets less 

 than I inch long, eliptic, obtuse; outer empty glume minute; 

 second emi:»t\' glume as long as the fruit, 7 nerved, pubescent. 

 Dry woods. Ivawrence, Gallia, Fairfield, Wayne. 



29. Panicum latifolium L. Broad-leaf Panic-grass. An erect 

 smooth, ])erennial, simple or branched above, 1 to .'] feet high. 

 vSheaths smooth and glabrous, ciliate; leaf-blades 2 to 7 inches long, 

 J to 1^2 inch wide, cordate, clasping at the Imse, acuminate, 

 glabrous or nearly so, ciliate, panicle 2^-2 to (5 inches long, short 

 or long exserted, rarely included, ascending, rather few flowered ; 

 outer empty glume almost ,'2 as long as the s])ikelet, acuminate; 

 second emjjty glume oval, obtuse 9 nerved, jjubescenl. In 

 woods. General. 



30. Panicum boscii Poir. Bosc's Panic-grass. A gla])rous 

 or minutely ]nibescent jjcrennial 1 to 2^ feet, bearded with re- 

 flexed hairs at least at the lower nodes. The sheaths usualh' 

 glabrous (jr jnibescent on the margin and at the summit, leaves 

 ovate to broadly lanceolate, 2 to o inches long, j^ to 1}4 inches 

 wide, pubescent l)elow, slightl\' pubescent or glabrous abo\'e; 

 panicle 2j/2 to 4 inches long, usually nearly as wide; spikelets | 

 to 3-16 inch long, ovate; outer empt\' glume ^ to | as long as 

 the spikelet. Wan-en, Adams, Jackson and Belmont. 



