362 Missouri Agricultural Report. 



scales; common in all kinds of farm seeds, particularly clover and grass seeds; 

 a well-known weed of gardens, cultivated fields and meadows. • 



Wild saltbush seeds (fig. 19, m) are thin, triangular or wedge-shaped, 

 reined, straw-colored or purplish, their two scales inclosing a single small 

 •seed; found in American-grown alfalfa, not appearing in imported seed. 



Amaranth (pigweed) seeds (fig. 19, n and o) are lens-shaped, black, and 

 "highly polished. Seeds of rough amaranth (fig. 19, n) are oval in outline; those 

 of tumbling amaranth are somewhat smaller and nearly circular in outline, 

 while seeds of spreading amaranth (fig. 19, o) are much larger and nearly circu- 

 lar in outline, the sides being strongly convex. Seeds of rough amaranth and of 

 tumbling amaranth are common in various kinds of farm seeds, particularly 

 clover. Spreading amaranth is native in the Western States and its seeds often 

 appear in alfalfa from that region. 



Wild spurry seeds (fig. 19, p) are very small, black and nearly spherical. 

 A narrow light-colored rim encircles the seed and serves to distinguish it from 

 other weed seeds. Some seeds are flecked with whitish particles; common in 

 imported clover seed. 



Chickweed seeds (fig. 19, q and r) are small, mostly brown, nearly circular, 

 and flattened; one kind (fig. 19, q), common in clover seed imported from 

 Europe, has numerous interlacing wrinkles covering the surface, the other 

 "kind (fig. 19, r) is borne by a common weed in lawns, gardens, and thin mead- 

 ows, has the surface covered with individual tubercles arranged in more or 

 less distinct rows, and is found in both imported and domestic clover seed. 



Mouse-ear chickweed seeds (fig. 19, s) are minute, flattened, wedge shaped, 

 tubercled, and distinctly reddish-brown; common in small clover and grass 

 seeds, particularly in alsike and timothy produced in Canada. This is a some- 

 what insignificant weed of lawns and thin meadows. 



Forked catchfly seeds (fig. 19, t) are very similar to those of white cam- 

 pion (fig. 17, j), bladder campion (fig. 17, k), and night-flowering catchfly (fig. 

 17, 1), but differ in having the tubercles on each face of the seed arranged in a 

 few distinct rows. These kidney-shaped brown seeds often appear in European- 

 grown red clover and alfalfa seed. 



Creeping buttercup seeds (fig. 20, a) are oval, flattened, brown or reddish 



brown, with a lighter rim. and have a prominent, straight or slightly curved 



1)eak; common in imported crimson clover, meadow fescue and rye-grass seeds. 



Peppergrass seeds (fig. 20, b) are oval, flattened, thin, reddish-yellow, and 



have a curved groove on each face; common, and sometimes abundant, in 



clover and grass seeds, particularly in timothy; a widely distributed annual 



-weed of waysides, gardens and meadows. 



Shepherd's-purse seeds (fig. 20, c) are minute, reddish yellow, oblong and 

 flattened with two more or less distinct grooves on each face; common in seeds 

 •of white, alsike, and poorly cleaned red clovers; a cosmopolitan, annual weed. 

 Cinquefoil seeds (fig. 20, d) are minute, straw-colored, oval, and lens- 

 shaped, the faces bearing curved and forked ridges; common in alsike clover 

 and timothy. 



Hop clover seeds (fig. 20, e) are minute, elliptical, yellowish, the surface 

 smooth and shining; common in poorly cleaned clover seed. The reddish 

 tflowers (shown at the right of the figure) are common in imported orchard 

 arass, meadow fescue, and rye-grass seeds. 



Yellow trefoil seeds (fig. 20, f) are oval with a projecting point on the 

 •edge, yellowish brown, or tinged with green. Besides being used as an adulter- 

 ant of clover and alfalfa seed, some seeds occur incidentally in clover and 



