Common Cocklebur

Cockbur1.bmp (1223370 bytes)  

Seedling.  Key characteristics: bur may be attached; cotyledons are thick and fleshy; base of hypocotyl purple-colored.

Cockbur3.bmp (1155218 bytes)

Seedling.  Key characteristics: first true leaves are opposite, later leaves are alternate; leaves have three distinct veins.

Cockbur2.bmp (2013786 bytes)

Stem.  Key characteristics: rough-textured with purple spots.

ccock19.bmp (3162094 bytes)     

Vegetative plants.  Key characteristics: leaves have very coarse "sand paper" texture, often lobed, coarse teeth along the margins, and long petioles.

Cockbur5.bmp (1545130 bytes)  

Fruit.  Key characteristics: sharp spines; each bur contains two seed.


Life cycle: summer annual.