Thanks Kay for these great links. I've not seen the Arnold website before,
and it's a fascinating data base. I'll definitely be consulting before my
next visit to Boston!

Very nice arboretum, from what I've seen of photos (I've not been there)...
they have a lot of Asiatic rarities like Davidia involucrata, too.

I'd never even heard of the chinense version of Liriodendron. I do
think that many L. tulipifera have green flowers, though. Mine

I've not seen one that doesn't have the orange splash at the bottom,
which I've not seen in L. chinense. If you get to the UK, I think most
of the big botanical gardens there have L. chinense, too.

has been in for about 10 years, and doesn't seem particularly
fast growing in Normandy. Perhaps too wet, or summers not
hot enough to fully ripen wood. No sign of flowers at all yet.

Could you possibly have L. chinense there? I understand it tends to be a
slower grower.
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