Figure 4 



Figure 4A. 



. Fig. 4. Crab Grass (.Digitaria aanguinalis). Common in cultivated fields. 

 Fig. 4-A. Smooth. Crab Grass (.Digitaria humifusa) ; a, leaf with sheath ; 6j 

 spikelet ; c, d, scales, stamens and pistils. Common in gardens and lawns. 

 (Drawn by C. M. King.) 



