GRASS FAMILY. II5 
6. Panicum rostratum Muhl. Beaked Panicum. (Fig. 248. ) 
Panicum anceps Michx. F). Bor. Am. 1: 48. 1803? 
' Panicum rostratum Muhl, Gram, 121. 1817. 
Culms erect from a creeping scaly branched root- 
stock, 114°-5° tall, much branched, compressed, 
stout, smooth. Sheaths compressed, glabrous, or 
the lower ones pubescent ; leaves 1° long or more, 
2//-5/’ wide, acuminate ; ligule very short ; panicles 
pyramidal, 6’-12 long; axis and ascending branches 
scabrous; spikelets 114’ 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 113’’ 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 Lam. Agrostis-like Panicum. (Fig. 249.) 
Panicum agrostidiforme Yam. Tabl. Encycl. 1: 172. 
1791. 
Panicum agrostoides Trin. Unifl. 212. 1826. Not 
Muhl. 1817. 
Culms erect, 11%4°-2° tall, much branched, com- 
pressed, smooth. Sheaths compressed, glabrous, 
or sometimes hairy at the throat ; ligule very short, 
naked ; leaves 1° long or more, 2//—4/’ wide, acum- 
inate; panicles pyramidal, 4’-12/ long, terminating 
the culm and branches; primary branches of the 
panicle spreading, secondary generally appressed ; 
spikelets 3/’’ long, acute, straight; first scale 
3-nerved, acute ; second and third scales 5-nerved, 
about twice as long as the first and longer than the 
oval fourth scale, which is slightly stalked; small 
palet of third scale usually empty. 
Wet ground, Maine to Minnesota, south to Florida 
and Texas. July—Sept. 
8. Panicum elongatum Pursh. Long Panicum. (Fig. 250.) 
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 1° long or moore, 2//—4/’ 
wide, acuminate, scabrous; panicles pyramidal, 
terminating the culm and branches, 4/-12/ long ; 
primary branches spreading or ascending, the sec- 
ondary usually divaricate ; spikelets about 14// 
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 4’ long. 
Moist soil, New Jersey and Pennsylvania to Ken- 
tucky, Tennessee and North Carolina. July-Sept. 
