triploids

Joe 
Here the answer to your questions.
Yes some hostas show extra-large pollen especially in the cultivars 
when looked under the microscope. I dont know or better doubt or 
these are fertile, but cannot exclude that. 
Yes hosta seem to have a triploid block as you called it , but it is 
not absolute I found about seven triploids in hosta and have made a 
few bonafide ones myself.. 
Ben J.M.Zonneveld
Clusius lab pobox 9505
2300 RA Leiden
The Netherlands
Zonneveld@RULbim.LeidenUniv.NL
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