Re: Honeybees and Tansy Ragwort...

Charlie Kroeger schrieb:
>> Is Tansy Ragwort known to be bee-toxic? 
> 
> I read that all parts of the plant are toxic and yet you say the dead
bees
> you see are not evenly distributed across the flowers indicating
something
> else.

hi,

I dare to contradict, what I can find in one of my books about plant 
pharmacy is that rabbits like to consume senecio's herb without damage, 
what brings me to the conclusion that the toxic is to be found in the 
phloem / plant sap ascending the main stem up to the flower and ending 
in nectaries

allow me a joke: letal dose for mices = 0,08 g / kg, compared with 90 mg 
of honeybee gives 7 μg alkaloid?

hoping that soneone in the NG brings me back to reality, meanwhile I'll 
continue to investigate

cheers kauhl