104. NATURE STUDY AND AGRICULTURE 
encircling row of projections, suggests a head with a crown — 
hence a ‘‘ kinghead.”’ These seeds are so hard to remove from 
wheat that its grade is reduced if it contains many of them. 
2. Marsh Elder: Red River Weed. — This resembles 
the kinghead in general appearance and size and is often 
found in its company. But, 
though its leaves are about the 
same size, they are not 3-lobed 
like those of the other plant, and 
the flower is entirely different 
in form. The seed is also very 
different, being small, round, and 
black. 
3. Annual Wormwood.— The 
re plant usually attains a height 
a Ar _ | of from 2 to 4 feet; is more or 
; less branched; quite smooth; 
the leaves are very much cut 
and divided. It has small, 
a. a he greenish white, composite flowers 
; that are held on their slender 
stems in a drooping position. 
Its bitter odor clings to the 
hands after touching the plant. Another wormwood, closely 
related to this, has been extensively used in medicine and is 
noted for its bitter taste. 
4. Lamb’s Quarters: Pigweed.— This plant is tender 
and juicy and pigs are very fond of it, but several other plants 
are called “ pigweed,”’ and therefore the name is not much 
better than none. ‘‘Lamb’s quarters” has reference to the 
shape of the leaves, which is supposed to suggest a leg of 
mutton. The plant grows in gardens and waste places. 
yi 
a, GREAT RAGWEED; 6, LESSER 
RAGWEED; c, MarsH ELDER 
