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Photographer: Stephen L. Solheim
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Family Dipsacaceae
Dipsacus fullonum L. subsp. sylvestris (Huds.) Clapham
common teasel, wild teasel
Dipsacus: from the Greek dipsa, "thirst," from the connate (joined or attached) leaf bases that in some ssp. hold water
fullonum: of fullers, a process of tightening a woolen weaving by rubbing the coarse, dry flower head on new fabric
Restricted Invasive - Eradicate!
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| Status: | Introduced - naturalized; ecologically invasive |
| Plant: | erect, biennial, 2'-7' tall forb; stems prickly |
| Flower: | purple to white, 4-parted, with irregular petals; inflorescence a dense, cylindrical cluster on a long, naked stalk, some of the bracts taller than the flower cluster; blooms July-Sept. |
| Leaf: | stem leaves lance-shaped, up to 12" long, toothless towards the top, bases surround the stem |
| Habitat: | moist; roadside, disturbed areas |
| Notes: | first year plant a basal rosette of wrinkled leaves |
| (Glossary) |
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