VEGETATIVE ORGANS OF GRASSES 



357 



pressed, loose. Culms slender, short joints. Ligule acute, lacer- 

 ate, membranous. Collar broadened on either margin. Auricles 

 wanting. 



Fig. 133. — Muhlenhergia Mexicana. Mexican Drop Seed. 



Muhlenlergia racemosa (glomerata). Marsh Muhlenbergia. 

 Figure 134. 



A wiry perennial. Restin,g period from October to March. 

 Rhizome thickened, much more so than in Muhlenhergia Mexi- 

 cana, not as scaly. From the rhizome of the previous year's 

 growth is sent up a new shoot, much branched, although not as 

 much so as Muhlenhergia Mexicana. New rhizomes are sent out 

 from the base of old culms. These rhizomes are markedly scaly. 

 Roots are long, slender. Leaves rolled in bud, having the ap- 

 pearance of a series of many scales when young. Blade flat, 



