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Cirsium MillerAsteraceae (Cynareae tribe) |
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Alternate trade names
thistle Common names
Japanese thistle Species cultivated
Most commonly cultivated Cirsium japonicum DC. Other species C. helenioides (L.) Hill (=C. heterophyllum (L.) Hill) C. rivulare (Jacq.) All. Origin
Europe and Asia. Brief characterization
Deeply lobed to pinnate, spiny-toothed, alternate leaves; discoid heads of flowers (florets) solitary or several per stem, 3-5 cm across; head subtended by cup-shaped to bell-shaped involucre of narrow, imbricate, often spiny-tipped phyllaries in multiple rows; disc floret long and narrow, with linear lobes and long-exserted style; style branches mostly fused; pappus of white, plumose, capillary bristles shorter than corolla tube. Cultivar and/or species variation
Few cultivars; heads dark red, pink, lavender, or purple. May be confused with
Countries exporting
Zimbabwe.  |
