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| English | Spanish |
| fuller's thistle | cardo negro Arg. (Cirsium lanceolatum, Cirsium vulgare) |
| fuller's thistle | cardo de toro (Cirsium lanceolatum, Cirsium vulgare) |
| fuller's thistle | cardo común (Cirsium lanceolatum, Cirsium vulgare) |
| fuller's thistle | cardo lanceolado (Carduus lanceolatus Hill, Cirsium vulgare Ten./Airy-Shaw) |