This teasel may be distinguished from its relative, common teasel ( " Dipsacus fullonum " ) by flower color and leaf shape.
2.
Another potential protocarnivorous pitfall trap is a species of teasel, " Dipsacus fullonum ", which has been only suggested as a possible carnivore.
3.
Common teasel ( " Dipsacus fullonum " ) and cut-leaved teasel ( " Dipsacus laciniatus " ) have both been observed as invasive species in the United States.