Class III. Order III. 43 



PANICUM DICHOTOMUM. Pursh. Forked Panic grass. 



Panicle simple, few flowered ; glumes obovate ; 

 leaves linear-lanceolate, divaricate, glabrous ; culm 

 dichotomous, procumbent. 



Procumbent like the foregoing. Leaves of the culm lanceo- 

 late ; those of the branches much smaller, linear, and divaricated. 

 Panicle with few scattered flowers. Dry fields and woods. 

 July. 



45. ANDROPOGON. 

 ANDROPOGON NUTANS. L. Chesnut Beard grass. 



Panicle compressed, nodding ; calyx hairy ; bar- 

 ren flower caducous ; perfect floret with a long 

 twisted awn. 



Syn. ANDROPOGON AVENACEUS. M.r. 



A tall grass with a long panicle of hairy, chesaut coloured 

 flowers. Culm four or five feet high. Leaves rough on the 

 edge. Panicle slightly nodding. Calyx villous ; corolla red, 

 with a long shining awn twisted and bent. Borders of Dry 

 Woods. August, September. Perennial. 



ANDROPOGON FURCATUS. J\luhl. Forked Beard grass. 



Spikes digitate, about four ; barren floret awnless ; 

 perfect floret awned ; rachis hairy. 



Four or five feet high, divided at top into a few diverging 

 hairy spikes. Rachis, pedicels of the barren flowers, and calyx 

 of the fertile ones, hairy. Awns twisted, slightly bent. Dry 

 fields. August, September. Perennial. 



Subgenus POLLINIA. Barren florets awned. 

 ANDROPOGON PURPURASCENS. Muld. Broom grass. 



Branches straight, appressed, each with from two 

 to four spikes on smooth pedicels of different lengths ; 

 rachis ciliate. 



Very common in dry barren soils, its spikes having a hairy 

 appearance. Culm three feet high, very slender. Branches 

 deeply divided into several stalks, one usually very short and 



