Trevor, Thank you for sharing info about eucalyptus honey and pollen analyses. This might be also considered;  bees collecting nectar from alfalfa but no pollen, and  bees collecting pollen from corn and no honey. Thus there are limitation for using pollen analyses to explain and ID sources of honey. In fact using both pollen profile and plants in the foraging range of bees is so important to provide info and confirm  honey sources. 
Once I have a question from a honey buyer, what type of honey that contained non significant number of pollen, and sucrose level is almost 10%. The c4 test did not show any adulteration with sugar syrup. A quick  phone call to the producer, he confirmed that his bees are placed mainly in alfalfa fields that was in heavy bloom. This is a simple example to show the value of understanding the value of learning about the source of nectar in the foraging range of honey bees. 
Medhat Nasr
Edmonton, Alberta Canada 

  

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