. ‘ ll
Adulterants and Weed Seeds of Seed Samples. 13  
Jac" ` considered above, and in shape most closely resembles the large _ A
iew reniform seeds of alfalfa. The color isa uniform yellow, with but ·
-Sl?i· slight variation. The form is very constant also, being reniform W
ilfa with the indentation at the scar decided. A small brown rounded '
1St- prominence is generally visible near the scar. A large seed meas- _
Bal, ures 0.14 by 0.06 by 0.04 inch. A smaller and more nearly average
*0JfS seed gives the measurements, 0.13 by 0.08 by 0.04 inch. Fig. 10, y A
>ws B, . ' *
soil ~ · ’
  WEED SEEDS FOUND lNl SAMPLES EXAMINED UNDER THE
his KENTUCKY LAW. "
Of Grasses (Gramineae). I _
he l Paspalum seiaceum.#In. samples of red clover is frequently l
ba- found ahemisphcrieal whitish seed with glossy surface, of the grass
he genus Paspalum. Its presence amongclover seed is not especially
ed objectionable since the grass is not veryaggressive as a weed, and
Od ,— has some value as forage. Several species of the genus are common
ds in Kentucky fields. P. Zaeve reaching at times a height of three
Ot feet, and producing rather wide bgadis 18 inches long. The seegs
d- . are borne on slender spikes, one 0 w ich is terminal. Fig. 11, . ,
>n Crab—grass (Syntlterilsma sdnguinaZis).—-Tliis is one of the at
e- best known and most troublesome weeds in cultivated ground. It
zd has some value for hay, and farther south is sometimes cut for this
s- ‘ use. it is a rather low-growing plant, reaching, commenly, a _ V
‘ ; A height of 18 or 20 inches, with short blades, slender stems, and
ip 3 to 7 slender spikes, 3 or 4 inches in length, and more or less pur-
|§. ple in color. The seeds are boat-shaped, being pointed at both ends,
5. , strongly convex on one side, flat on the other, and remain enclosed
]_ in the downy scales, a short one lying at the base of the convex  
me side, and a large one, with Hve evident longitudinal nerves, en- Q
H ' wrapping the flattened side. In the scales the seed measures 0.16 _l
y by 0.04 by 0.03 inch. Removed from its scales ,it is smooth, iinely,
r longitudinally striate above, dull green in color. Fig. 11, B.
Q Witch Grass (Pezzuzrzmz. capiZZa1·e).——Tliis is also common in
3 Kentucky Helds, and   known from all our other species by the