22 



HOW TO EXAMINE SPECIMENS. 



Common Name. 



Gajua Grass, .... 

 Woolly Beard Grass, . 

 Short-bearded Erianthus, 

 Finger-spiked Wood, . . 

 Purple-wood Grass, . . 

 Silver Beard Grass, , . 

 Virginian Beard Grass, . 

 Cluster-flowered Beard 



Grass, 



Indian Grass, 



Dhourra Corn, .... 



Broom Com, 



Chinese Sugar-cane, . . 

 Chocolate Com, .... 

 T"fii gn Corn, ■ • > . • 



To aid the reader in finding the true name of an 

 unknown specimen of grass, the following arrangement 

 will be found to be very convenient, and easily under- 

 stood. Let the flowers of the grass be first examined. 

 If but one is found in each spikelet, refer to number 2, 

 of the left-hand column, and then examine and see 

 whether they are arranged in panicles or spikes ; if the 

 former, then refer to number 3 of the left-hand column, 

 and see whether they are awned or not. If awned, 

 refer to number 4, if without awns, to number 12, of 

 the left-hand column. If unawned, and having two 

 glumes, refer to 13, and so on. If without glumes 

 and aquatic, it is a zizania, or wild rice. 



If in the first examination the spikelets are found to 

 have two or more flowers, refer to number 26, of the left- 

 hand column, and see whether the inflorescence is in 

 panicles or spikes. If the former, refer to 27, of the 

 left-hand column. If the latter, in spikes, refer to 39, 

 and then see whether the spikelets are two-rowed, or 

 one-sided. If the latter, refer to 45, and see whether 

 the spikes are digitate and the spikelets in two rows. 

 If they are, refer it to the genus Eleusine. 



