COI.ORADO Agricultural College 
32 
14. Wild Rye, Lyme Grass 
{Elymus L.) 
Lemma convex, faintly 5-veined, acute at the 
apex or bearing a sub-terminal,' blunt, acute, or long 
awn; palet a trifle shorter than the lemma, velvety; 
rachilla one-fourth to one-sixth the length of the seed, 
cylindrical, distinctly narrower at the base, hairy or 
smooth, prominent ; seed 7-15 mm. long, 1-2.5 mm. 
wide ; grain flat or rounded on one side, grooved, 
hairy at the tip. 
Nodding Wild Rye {Elymus canadensis L.) (Fig. 
34 ). — Seeds pale green-yellow to straw-yellow in 
color, 10-12 mm. long, 1.5-2 mm. wide; lemma and 
rachilla hairy; awn 15-20 mm. long. 
Fig. 34. Nod- 
ding Wild Rye 
(Elymus cana- 
(lensi.s). x 3. 
15. Stink Grass, Skunk Grass 
( Eragrostis Beauv . ) 
Grains free at maturity, spherical to broad oval, 
or cylindrical in shape, pointed at the ends, smooth 
with a network of fine lines ; translucent. 
Stink Grass {Eragrostis megastachya {Koel.) 
fAnIc.) (Fig. 35). — Seeds maroon to claret-brown in 
color, spherical or cylindrical in shat;e, marked with a 
network of fine lines, translucent, pointed at the ends, 
.4-.0 mm. in diameter. 
/ 
16. Drop-seed, Rush Grass 
{Sitoroholus R. Br.) 
Grains free at maturity, pericarp, loosely enclos- 
ing the seed, often thin, and passing away early 
(evanescent) ; grains usually have a characteiistic, 
crescent-shaped black mark at the base; many grains! 
lose the pericarp early and the black mark is not in| 
evidence; grains vary in color from Morocco-red to 
light buff, are usually translucent, ' flattened oval toj 
disk shaped, .5-1.5 mm. long, .3-1 mm. wide. ; 
Sand Drop-seed {Sporoholus crytandrus (7’orr.^ 
A. Gray) (Fig. 3G).— Seeds Morocco-red in color, .r^ 
mm. long, .3-.4 mm. wide, black mark at the bas»’^ 
minute and almost indistinct; seeds faintly Iransln-t 
cent, oval in shape. ! 
Fig. 36. Sand 
Drop-seed (Sporo- 
bolus cryptand- 
rus). A. Floret. 
B. Caryopsis. 
30 . 
Fig. 35. Stink- 
grass (Eragrostis 
megastachya). n 
10 . 
