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| Spanish | English |
| cardo borriquero | Canada thistle (Cirsium arvense) |
| cardo condidor | Canada thistle (Cirsium arvense) |
| cardo corredor | field eryngo (Eryngium campestre) |
| cardo cundidor | corn thistle (Cirsium arvense) |
| cardo cundidor | creeping thistle (Cirsium arvense) |
| cardo cundidor | Canada thistle (Cirsium arvense) |
| cardo de cardar | fuller's teasel (Dipsacus fullonum, Dipsacus sativus) |
| cardo de comer | cardoon (Cynara cardunculus) |
| cardo lanudo | woolly safflower (Carthamus lanatus L.) |
| cardo lanudo | saffron thistle (Carthamus lanatus L.) |
| cardo mariano | milk thistle (Silybum marianum) |
| cardo mariano | holy thistle (Silybum marianum) |