5(i 



Fig. 38. Panicum serotinum (Walt.) Trin. (Syntherisma zero- 

 Una Walt.; Digitaria serotina Mx.). Little Crab-grass. An 

 extensively creeping annual or biennial, with flat, hairy leaves, 

 and slender spikes digitate at the apex of the ascending culms, 

 which are 1 to 3 dm. high. Low, sandy ground, roadsides, pas- 

 tures, and cultivated fields near the coast, Delaware to Missis- 

 sippi; on ballast at Philadelphia. June-August. 



