106 PAXUACK.E. 



c. Podnnclos 1 nun. or nion^ diiim (d) 



a. Hliuk'S lant'o-ovuto, 3 nun. long IK 



(1. Hliulos muc-li lon«j:cM' Il>. :i() 



D. EciiiXociiLOA (Ueiinv. us a gonns). Spik'vh'ls imhriratc, sjn'ket/, 

 si'ssilc or OH short pediceh on two siites of a triaiiijutar nieliis, 

 u,snnU{i rough with stiff haim^ the third (/I inne often awl-pointed 

 or awned. Usually coarse plants; only a slightly distinct sec- 

 tion of Panicnm. 



Spikelets 5 mm. or more long 20 



Spikelets less than 5 mm. long (a) 



a. Spikes sinij)!!', about 2 cm. long 21,22 



a. Spikes more or less comimuiul 22. 2:J 



E. I'TYCiioi'iiYLLiM (Hraun as a genus). Tall with ample leaves. 

 Panicle siinjde or roitipoand, man //-flowered. Spikelets subses- 

 sile, subtended b// a solilar// bristle, Avhich seems to connect these 

 species with Chamwraphis {Setaria). The setfe of this section, 

 however, are merely the tips of the ultimate spikelet-bearing 

 branches of the panicle, whereas the sette of Channpraphis are 

 abortive branchlets, forming a kind of involucre below the spike- 

 let. A small and distinct section 2-i, 25 



F. IIymexachxk (lieauv. as a genus). Spikelets small or minute 

 in a spikelike panicle. Species 5 or (> 20 



G. Eri'AxrcrM. Spikelets iu /mnicles, awnless, mostl// pedicellate. 

 Containing about 2(»0 species, strictly normal in structure. 

 Several of the cultivated Millets belong in this section. (K. M.) 

 K. Virgaria 'Vrm. Spikelets pointed, often in pairs. Branches 



of the panicle mostl// angular. 



Stiff hairs on the pedicels 27 



No bristles nor stiff hairs on the pedicels (a) 



a. Spikelets conspicuously white, pubescent 28 



a. Spikelets with appressed. silky hairs as seen by a 



lens 2!> 



a. Spikelets not white, pubescent nor hairy (b) 



b. Spikelets clothed with short hairs from callus- 

 bases ;}() 



b. Spikelets smooth or slightly rough (c) 



