> On Jan 4, 2019, at 10:15 AM, Rusty Burlew <[log in to unmask]> wrote:
> 
> On the contrary, most native bees are polylectic, foraging from many plant species just like honey bees.

Thank you for this correction Rusty, as a Californian (and not a mellitologist, just a beekeeper) I know just a few things about my local bee populations-  just enough to get me in trouble I guess. 

The Digger or Miner bees (Andrena) have about 260 species in this state.  Evening primrose (Oenothera) is highly dependent upon them for pollination. Andrena chalybaea collects pollen from only one species, Suncups. So while this is a dramatic situation, where a plant is highly or completely dependent on one bee genus, it is not the norm as I had concluded. 

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