^4 
Colorado Agricultural College 
A a 
Fig. 15. Switch- 
grass (Panlcum 
virgatum). A. Top 
view. B. Bottom 
^ iew. X 12. 
2. Switch Grass, Taxl Smooth 
Panicum {Panicum virgatum L.) 
(Fig. 15). — Seeds coarsely mottled, 
sulphur yellow to smoke gray in 
color, shiny, obscurely five-veined at 
each end, the veins indistinct in the 
light colored band which crosses the 
center of the seed. 
3. Barnyard Grass, Jungle Rice 
( EcJiinochloa B eauv. ) 
Lemma parchment-like, accuminate (tapering at the end), awnless, mar- 
gins enclosing the palet except at the apex; palet parchment-like, the tip or 
summit free from the inrolled lemma; seeds 3-3.5 mm. long, 1.5-2 mm. wide, 
tapering at the ends, shiny, smooth; rachilla absent. 
liARNYARD Grass (Echinochloa crus-gaUi (L.) Bcaiiv.) (Fig. 16).— Seeds 
light orange yellow to buckhorn brown in color, shiny, obscurely three-veined. 
Fig. 16. Barnyard grass (Echinochloa crus- 
galli). Fruit (Center) enclosed in glumes, x 13 
Fruit (right and left) without glumes, x 10. 
