A one-page encyclopedia entry on the teasel (genus Dipsacus), covering its etymology, botanical description and distribution in Europe and the United States. It explains that the heads of fuller's teasel (Dipsacus fullonum) are used to raise the nap on cloth, fixed on a revolving cylinder, and contrasts them with the wild teasel (Dipsacus sylvestris). Includes a line drawing of the wild teasel plant.