13 



42. • collateral, ipikeleti In twos or more Elymm 



It, " opposite. spikeleLs solitary Secale. 



43. On ! perfect among several neutral ones Ctenium. 



43. • "' Bower below several neutral ones 44. 



IS. Bptkelefe conglomerate, or paniculate Dactylis. 



43, With more than one perfect tlowcr 45 



4_. Spikes dense Boutelona 



44. '* filiform, racemed Gymnopogon. 



44. " slender. digitate Cynodon. 



45. " digitate, plumes and pules awnless, blunt Eleusine.- 



45. " raoemed, slender Leptochloa 



