GRASSES OF OHIO 317 



ft. high, and a small, ovoid, short-exserted panicle. Spikelets obtuse, 

 very turgid, slightly pubescent ; outer empty glume minute. 



In dry or moist sandy soil or on dry prairies. June-Aug. Cuya- 

 hoga, Erie, Wood, Franklin. 



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

 tufted, yellowish green perennial grass with simple, erect or ascend- 

 ing stems, 1-2 ft. high, and a few-flowered, very narrow, finally long- 

 exserted panicle with erect branches. Spikelets broadly obovate, 

 very turgid, usually pubescent ; outer empty glume nearly l / 2 as long 

 as the spikelet. 



In dry soil. June-Aug. Lake County. 



27 . Panicum ashei Pear. Ashe's Panic-grass. An erect, stiff, 

 sparingly branched, purplish perennial grass, ^-lj/2 ft. high, with 

 a small panicle, its branches ascending. Spikelets elliptic, obtuse, 

 purplish ; outer empty glume minute. 



In dry woods. May-Aug. Cuyahoga, Lake, Trumbull, Fairfield. 



28. Panicum commutatum Schultes. Variable Panic-grass. An 

 erect, rather slender, finally dichotomously branched perennial grass, 

 1-2^4 ft. high, with firm leaf-blades, cordate clasping at the base, 

 and a lax panicle with spreading branches. Spikelets elliptic, obtuse; 

 outer empty glume minute. 



In dry woods and thickets. June-Aug. Lawrence, Gallia, Fair- 

 field, Wayne. 



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

 nearly smooth perennial grass with simple or branched stems, 1-3 

 ft. high, with broad leaf-blades cordate clasping at the base, and a 

 long-exserted panicle with ascending few-flowered branches. Spike- 

 lets ovate-elliptic, obtuse ; outer empty glume about ]/z the length 

 of the spikelet. 



In rocky woods and on sand dunes. July, Aug. General. 



30. Panicum boscii Poir. Bosc's Panic-grass. A glabrous or 

 minutely pubescent perennial with erect, simple or somewhat 

 dichotomously branched stems, 1-2^ ft. high, with broad leaves and 

 a slightly exserted panicle with few-flowered spreading or ascend- 

 ing branches. Spikelets ovate ; outer empty glume nearly y 2 as long 

 as the spikelet. 



In woods. June-Aug. Warren, Adams, Jackson, Belmont. 



The variety P. boscii molle (Vas.) Hitch. & Ch. is downy- 

 pubescent thruout and usually not so tall. Reported from Hamil- 

 ton, Lawrence, and Cuyahoga Counties. 



31. Panicum clandestinum L. Hispid Panic-grass. An erect 

 or ascending, rather stout perennial with at first simple but later 

 much branched stems, 1^2-4 ft. high, with broad cordate clasping, 

 glabrous leaf-blades and rather long-exserted primary panicles with 



