| Cirsium vulgare (Savi) Ten. | |||
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| Family | Compositae — APG family: Asteraceae | ||
| Synonyms | Carduus vulgaris Savi, Cirsium lanceolatum (L.) Scop., Carduus lanceolatus L. | ||
| Common name | bull thistle | ||
| Description | Stem branched above, spiny-winged, furrowed, from long taproot; basal leaves obovate-lanceolate in outline, deeply pinnatifid, with 2-lobed segments, the upper toothed near base, the teeth tipped with long, stout spines, prickly-haired above, floccose below; heads solitary or 2-3; involucral bracts lanceolate-acuminate, the outer spine-tipped, the inner scarious; flowers pale purple; pappus long, white. | ||
| Ecology | An introduced weed. Described from Pisa, Italy. |
This is a digital representation of Eric Hultén’s ‘Flora of Alaska and Neighboring Territories: A Manual of the Vascular Plants’, which was published by Stanford University Press in 1968. The book was digitized by C. Webb (at UAMN) as part of the Flora of Alaska project, with funding by the US NSF (Grant 1759964 to Ickert-Bond & Webb), and with permission of Stanford University Press. Data and images © 1968 Board of Trustees of the Leland Stanford Jr. Univ. Usage licence: Creative Commons BY-NC-SA 4.0. NB: You may find OCR errors; please refer to the hard-copy if in doubt.