"5 



( Fig. 248. ) 



GRASS FAMILY. 

 6. Panicum rostratum Muhl. Beaked Panicuni. 



Panicum anceps Michx. Fl. Bor. Am. i: 48. 1803? 

 Fanicum rostralum Muhl. Gram. 121. 1817. 



Culins erect from a creeping scaly branched root- 

 stock, i^-5 tall, much branched, compressed, 

 stout, smooth. Sheaths compressed, glabrous, or 

 the lower ones pubescent ; leaves i long or more, 

 2 // -5 // wide, acuminate ; ligule very short ; panicles 

 pyramidal, 6 / -i2 / long; axis and ascending branches 

 scabrous; spikelets i%" long, crowded, lanceo- 

 late, acuminate, curved, longer than the scabrous 

 pedicels ; first scale less than one-half as long as 

 the spikelet ; second scale about \%" long, curved 

 at the apex, scabrous above on the middle nerve; 

 third scale usually subtending a small empty palet. 



Moist soil, New Jersey to Illinois and Missouri, 

 south to Florida and Texas. July-Sept. 



7. Panicum agrostidiforme I y am. Agrostis-like Panicum. < V\ K . 249.) 



Panicum agrostidifm m,- I.ain T..1.I Kncycl. I: m. 

 1791. 



Panicum agrostoides Trin. I'nifl. 212. i8a 

 Muhl. 1817. 



Culms erect, i%-2 tall, much branched, com- 

 pressed, smooth. Sheaths compressed, glabtOM, 

 or sometimes hairy at the throat ; ligule very short. 

 naked ; leaves i long or more, 2"-.j" wide, acum- 

 inate ; panicles pyramidal, 4'- 12' long, terminating 

 the culm and branches ; primary branches of the 

 panicle spreading, secondary generally apprcMed ; 

 spikelets %" long, acute, straight ; first scale 

 3-nerved, acute ; second and third scales 5-ncrved, 

 about twice as long as the first and longer than the 

 oval fourth scale, which is slightly stalked; small 

 palet of third scale usually .?: 



Wet ground. Maim- to Mimu-sota, south to Florida 



and Texas. July-Sept. 



8. Panicum elongatum Pursli. Long Panicuni. 

 Panicum elongatum Pursh, Fl. Am. Sept. 69. 1814. 

 Panicum agrostoides Muhl. Gram. 119. 1817. 



Culms erect, 3-5 tall, much branched, stout, 

 compressed, smooth. Sheaths smooth and glab- 

 rous, compressed ; leaves i long or more, 2 // -4" 

 wide, acuminate, scabrous ; panicles pyramidal, 

 terminating the culm and branches, 4 / -i2 / long ; 

 primary branches spreading or ascending, the sec- 

 ondary usually divaricate ; spikelets about \]^" 

 long, crowded, acuminate ; first scale acute or 

 acuminate, one-third the length of the equal and 

 acuminate second and third; fourth scale narrowly 

 elliptic, about one-half as long as the third and 

 raised on a delicate stalk about %" long. 



Moist soil, New Jersey and Pennsylvania to Ken- 

 tucky, Tennessee and North Carolina. July-Sept. 





