* 13
. 1
. A Aclulterazits and Weed Seeds of Seed Samples. 15 it
The opposite face of the seed is more finely rugose, and much of it is P
Pam` constituted by an ovaltor elliptical slightly impressed area, with at "
it On i one end a. large but low rounded mound. The color varies from  
Some pale green to dark brown. The seed is generally found in market `
Very samples with its scales removed. Three scales, one short and small .
- tll'0 i the others large, all strongly ribbed, are frequently present. Seeds y
S the removed from tliescales measure about 0.12 by 0.08 by 0.05 inch. , _
le of x The seeds occur in samples of red clover and-alfalfa seed. · Fig. 13, A (
es it A. B. " A
i6 by . ,o ` `
Green Foxtail (Olzaeiioehloa- ei?·iidis).—-Tlierseed of this com-
. mon weedsis like the preceding in general shape, but is much small- _
)€¤`S€p · ‘ er and more finely eross—wrinklcd , on the convex side, at the base
» 00- isa small, somewhat flattened area, enclosed by two curved carinm,  
good like parenthesis. The opposite side is a trifle convex, instead of be-
feet. - ing extensively impressed, though the region corresponding to the
th a , impressed area. of the seed o_f pigeon grass is outlined, and even the
Jssy, low mound represented. »The color varies from almost uniform
ines pale green to mottled brown and black. Many examples are dis-
the tinetly speckled with brown, A seed measures 0.00 by 0.05 by 0.04 .
teh- inch. The scales_enclosing seeds are smooth, and ’but little ribbed.
the It is found in samples of red clover, alfalfa and timothy seeds. Fig. y
s it _ 1%, A, B.  
).O3 The grass is less coarse than pigeon grass, though like it in ‘
general character. The head is more slender and inclined to droop,
_ instead of standing rigidly erect. It is_ provided with green instead ·
Dm- · ·of yellow hairs. lt occurs in all sorts ofsituations in grass land
i in x and cultivated fields., but like itsyrclative, is.not especially diiiicult
be to get rid of. _ _
re- . - .
on, / Cheat, chess (Bromius seealimzs) .-—S-eeds of this notorious weed , g
and are longer, larger and otherwise very different from those of the t
ed. foxtail grass, just considered. The seed itself is always wrapped · _*
ad- about by alarge glume,`with five obscure nerves, and with a slender V
his bristle at its tip, about as long as the scale. These bristles are, A
‘se, however, generally broken off in seeds occurring with samples ob-
ng tained in the market. A smaller, thinner scale lies upon the con-
‘hc cave face of the seed, and is provided with an evident rib at each