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Distribution of safranin-dyed pollen on bumble bees, as a percentage in each sector of total pollen grains. (A) Pedicularis densispica, n = 16 bumble-bees, 17 650 pollen grains. (B) Pedicularis tricolor, n = 23 bumble-bees, 1169 pollen grains. (C) Pedicularis dichotoma, n = 15 bumble-bees, 1606 pollen grains.
