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Thumbnails - Canada Thistle (Cirsium arvense)    Quick Category filter... Show one per species Show all per speciesAmphibians\nAnts\nBees\nBirds\nButterflies\nDamselflies\nDragonflies\nFerns\nFish\nFlies\nFungi\nGrasses\nGrasshoppers\nHornets and Wasps\nLichens\nMammals\nMicro Moths\nMoths\nReptiles\nSpiders\n Record Tag filter...Flowering\nFruiting\nFlower Budding\nNo Evidence of Flowering\nFemale\nMale\nSpecimen\nPublished\nCultivated\nHosting Other Taxon\n

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