Stewart Robert Hinsley schreef
Do you happen to have a reference for this?

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Not so as to be immediately useful
1) I read about it in a Dutch magazine (Natura)
2) It was about ten years back, give or take a few years, not sure exactly
when
3) I cancelled my membership several years back and I don't even remember if
I kept my magazines, let alone where they went.

However they were very keen on this sort of thing and not likely to publish
something not carefully looked at. The article, as I remembered, dealt with
Tilia in general.
PvR