60 



THE TRUE GRASSES. 



Fig. 18.— Andropogon Sorghum Brot. A. the original form (A. Halapensis Sihth.). 

 B, a cultivated form (var. vulgaris); after Reicheub., Ic. 1503. D, G, and AT, var. 

 mlgaris, after Reieheub., VII. 465. 



