49 



Fig. 43. PANICTJM GROSSARIUM L. Amoen. Acad. 5 : 392. 1759. JAMAICA 

 CRAB-GRASS.— Apparently an annual, with glabrous, much-branched, ascend- 

 ing culms 3-6 dm. {l°-2°) long, broad, lanceolate leaves and spreading panicles 

 of a few simple racemes 3-8 cm. (li'-3') long. Spikelets {a,b) usually in pairs, 

 ovate, acute 4 mm. (2") long; first glume 3-nerved, obtuse; second and third 

 glumes 5-nerved, acuminate, minutely pubescent, a little longer than the obtuse 

 flowering glume (e). Leaves 4-10 cm. (li'-4') long, 1.5 cm. (7^") wide.— Bal- 

 last ground, Philadelphia. Adventive. (West Indies.) September. 



Apparently valuable as a forage plant. 

 20801— No. 7 4 



