Wild teasel

Dipsacus fullonum, syn. Dipsacus sylvestris, is a species of flowering plant known by the common names wild teasel or fuller's teasel, although the latter name is usually applied to the cultivated variety D. fullonum var. sativus. It is native to Eurasia and North Africa, but it is known in the Americas, southern Africa, Australia and New Zealand as an introduced species.

It is a herbaceous biennial plant (rarely a short-lived perennial plant) growing to 1–2.5 metres (3.3–8.2 ft) tall. The inflorescence is a cylindrical array of lavender flowers which dries to a cone of spine-tipped hard bracts. It may be 10 centimetres (3.9 in) long. The dried inflorescence of a cultivar was historically used in textile manufacturing as a tool for fulling.

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