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Thumbnails - User: 21936 - 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...Flowers\nFruits or Seeds\nFlower Buds\nNo Flowers or Fruits\nFemale\nMale\nSex Cannot Be Determined\nSpecimen\nPublished\nCultivated\nBreaking Leaf Buds\nGreen Leaves\nColored Leaves\nNo Live Leaves\nHosting Other Taxon\n

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