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



minute, second empty glume shorter than tho fruit, faintly nerved. 

 Woods. Rather general. No specimens from the nonhwestcrn 

 counties. 



17. Panicum microcarpon Aluhl. Small fiaiited. Panic- 

 grass. A perennial, simi)le at first, later densely branched, 

 prostrate or leaning, reflexed barbs at the nodes. The primary 

 leaves 3 to 4J^^ inches long, 1-2 inch wide, secondary leaves 1 to 2 

 inches long, re to | inch wide, smooth; prmary ])anicle long 

 exserted, rigid, .'! to 4K inches long; secondary panicle smaller, 

 lax and included; spikelets about ^ inch long, purplish, glab- 

 rous; outer empty glume ^ as long as the spikclet; second empty 

 glume slightl\' longer than the spikelct. Aloist soil. Cuyahoga, 

 Lorain, Erie, Fairfield, Hocking, Jackson, Adams. 



IS. Panicum boreale Nash. Northern Panic-grass. An 

 erect, simple, ])erennial 1-2 feet tall, later becoming somewhat 

 branched and decumbent. Leaves erect, glabrous or rarely 

 puberulent beneath, sparingh' ciliate toward the base; Panicle 

 2 to -f inches long; narrow, ascending and spreading loosely flower- 

 ed; spikelets ^ inch or slightly longer, outer empty glum(> | 

 as long as the second empty glume; second empty glume as long^ 

 as the fruit. Moist open ground or woods. Fulton county. 



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

 An erect or spreading dichotomous perennial, glabrous, or pubes- 

 cent below. Nodes swollen, internodes longer than the slieaths 

 ligulc of hairs at the top of leaf sheath i^ to ^/,s2 inches long; 

 leaves 2 to 3>4 inches long, ^' to i^ inches wide; ascending when 

 young with a few hairs on the margin of the base, glabrous above 

 and glabrous or puberulent below; primary ])anicle long-exserted 

 1 to 2}4 inches long, about as broad as long, loosely flowered, as- 

 cending or s])reading; spikclet somewhat ])ubescent, purplish, less 

 than i^o hich long; outer empty glume minute; second empty 

 glume shorter than the fruit. vSandy woods and oi)cn grounds. 

 Ashtabula, Hocking. 



20. Panicum hauchucae Ashe. Hair\- Panic-grass. A pw- 

 ennial, erect and simple at first, later profusely branched and some- 

 what decumbent. Nodes barbed; sheaths pa])illo.se-hirsule; 

 ligule of hairs ^ inch or less long; leaves erect or spreading, thin. 

 lax or firm, u])]jer .surface pilose, lower surface apj^rcsscd-pubes- 

 cent with a luster; panicle 2 to 4 inches long, .secondary shorter 

 than the jjrimary, branches ascending or spreading; spikelets 

 pubescent, l-Ki inch or less long; outer empty glume minute; 

 second empty glume papillose-pilose, slightly .shorter than the 

 fruit. Prairies or open ground. General. 



21. Panicum villosissimum Nash. Villous Panic-gra.ss. A 

 villous, olix'c green, erect or ascending slender perennial. Sheaths 

 villous with spreading hairs, ligule at the top of leaf sheath I to 

 ^ inch long; leaves firm, ascending, 2^4 ^<^ ' inclies long, I 



