20 
The VEGETABLE SYSTEM. 
GENUS IIL 
B U R W E E D. 
X A N T H I U M. 
Character of the Genus. 
The Head is an obtufe Cone ; the general Cup is equal 
in length to the Flowers. 
Plate 4. o. a b. 
THORNY BURWEED. 
Plate 4. Fig. 1. 
Chara&er of the Species. Xanthium Spinofum. 
The Leaves have no Footftalks; and the Stalk is thorny. 
Fig. 1. a b. 
This is an annual ; native of Portugal, and flowers in June. It 
grows to two feet and a half high. The Stalk is pale ; the Leaves are 
of a fine grafs green j the Thorns, which grow by three’s near the Bafes 
of the Leaves, are brown. The Flowers are whitift), with a tinge of 
green j and the Fruit, which is rough, and grows on other parts of 
the Plant, is of a pale Olive colour. 
UNARMED BURWEED. 
Plate 4. Fig. 2. lesser burdock. 
Charafler of the Species. Xanthium Strumarium. 
The Leaves have Footftalks; and the Stalks have no 
Thorns. 
Fig. 2. a b. 
This is an annual; native of our ditch banks, wafte grounds, and 
old dunghills, but not common. It rifes to a foot and a half high ; 
and flowers from July to September: a rugged Plant of irregular 
growth, but with Angularity enough to fupply the place of beauty. 
The Stalk is of dirty red, fpotted with black ; or a very deep gloomy 
purple. The Leaves are of a faint green. The Flowers are pale and 
whitifli. There are, befide thefe, diftindt Fruits or Seed Veflels, on 
different 
