Cotyledons
Thick, narrow
Short with rounded tips

Roots
Fibrous taproot

Stem
Erect, reddish, swollen nodes
Smooth, usually branched
Membranous leaf sheath at stem joint

True Leaves
Alternate, long, narrow
Triangular dark spot in center of leaf
Sparsely hairy on veins
and margins, smooth edges

Flowers
Pinkish, clustered on end of stalk
arising from stem/leaf joint

Habitat
Grain fields, waste areas, cultivated fields

Note
Resistant to 2,4-D and MCPA
Green smartweed is similar in appearance