316 OHIO BIOLOGICAL SURVEY 



19. Panicum lindheimeri Nash. Lindheimer's Panic-grass. An 

 erect or spreading dichotomously branched perennial grass 1-1^2 ft. 

 high, with swollen nodes and a loosely flowered panicle with ascend- 

 ing or spreading branches, the primary one long-exserted. Spikelets 

 pubescent, obovoid ; outer empty glume minute. 



In dry sandy woods and open ground. June-Aug. Ashtabula, 

 Hocking. 



20. Panicum huachucae Ashe. Hairy Panic-grass. A profusely 

 branched erect or somewhat decumbent, hairy perennial grass, J^-lJ^ 

 ft. high, with a rather densely flowered, ovoid panicle with ascending 

 or spreading branches. Spikelets pubescent; outer empty glume 

 minute. 



In dry soil and on prairies. June-Sept. General. 



21. Panicum villosissimum Nash. Villous Panic-grass. A vil- 

 lous, olive-green perennial grass with tufted, at length branched, 

 erect or ascending stems, 1-2 ft. high, and a loosely flowered, long- 

 exserted primary panicle. Spikelets obovate to elliptic, densely 

 pubescent with short spreading hairs ; outer empty glume a little 

 less than y 2 as long as the spikelet. 



In dry sandy soil and open woods. June-Aug. Cuyahoga, Erie, 

 Licking. 



22. Panicum implicatum Scrib. Slender-stemmed Panic-grass. 

 A slender, tufted, more or less pubescent, at length much branched 

 perennial, ^-2 ft. high, with densely papillose-hirsute sheaths and 

 an open, ovate panicle with widely spreading flexuous branches. 

 Spikelets obovoid, obtuse, papillose-pilose ; outer empty glume almost 

 ^2 as long as the spikelet. 



In wet soil. July-Sept. Gallia County. 



23. Panicum tsugetorum Nash. Hemlock Panic-grass. A bluish- 

 green or sometimes purplish perennial with slender, tufted, branched, 

 decumbent or prostrate stems, ^4-1^ ft. long, and a rather loosely 

 flowered panicle with ascending or spreading branches. Spikelets 

 broadly ovate, pubescent; outer empty glume 3/3 as long as the 

 spikelet. 



In sandy woods. June-Sept, Defiance, Summit. 



24. Panicum leibergii (Vasey) Scrib. Leiberg's Panic-grass. 

 A pubescent perennial grass, 1-2^ ft. high, with slender, erect, and 

 at length branched stems, with papillose-hispid sheaths and an ob- 

 long panicle with erect or ascending branches. Spikelets oval, papil- 

 lose-hirsute, outer empty glume y 2 the length of the spikelet. 



On prairies and dry soil. June, July. No specimens. 



25. Panicum scribnerianum Nash. Scribner's Panic-grass. An 

 erect perennial with simple or dichotomously branched stems, y 2 -2 



