I don't know if you will see this Rene (I must learn how to do the accents sometime!) but in case you do I wish you a very long and happy retirement. I'm sure they will miss you and I'm certain you will miss them but if you're anything like the rest of us in six months time you'll wonder however you found the time to work.
I noticed he has a talk scheduled for ORGS (Ontario) in September, so I am sure it is just the beginning of a very productive 'retirement'
MBG is a wonder, the best in Canada and of course the Alpinum is a sight to behold. I still have to make it there in early spring when at its best though...
Here's a more recent view:
And one more fine NA species - Petrophytum hendersonii