DESCRIPTIVE MANUAL 



Fig. 3. Common Crab Grass CDigitaria sanguinalis) . Common in fields, gar- 

 dens, meadows. Rooting at the joints. 

 (Photographed by Colburn.) 



Fig. 3-A. Distribution of Common Crab Grass. 



glumes and the flower proper; the first glume very small, the sec- 

 ong about %-% as long as the spikelet, usually hairy on the mar- 

 gin, the third glume somewhat longer than the fourth, which is 5- 



