Comparison Chart for Species of Conyza

Character

Conyza bonariensis

Conyza canadensis

Conyza floribunda

pappus color

brownish white to
orangish-yellow,
often with reddish tips

whitish to cream

whitish to yellowish

pappus length

3–4+ mm

2–3 mm

2–3(4) mm

fruit lateral vein color

fruit-colored to whitish

fruit-colored to whitish

fruit-colored to whitish
to red

Note: It may not be possible to distinguish these species based on the disseminule alone.