RRD2.
If these trees are native only to a region in the UK or South America
If you do discover that the trees are of european decent or even better from engalnd but have trouble finding documented evidence about the tree itself do let me know and i shall try and get a book on english flora, to help you, this may also come in handy if any other plants are found, as pointed out, there was red clover near the MP and the mention of other plants and flowers.
over here we have boot sales( i believe in the USA they are called garage sales) people sell some of the strangest things for pence literaly!
the season is about to start and there is always a plethora of old books on plants that may come in handy.
i must confess that i have never seen(to the best of my knowledge) an oak matching the discription of the ones on OI, but that doesnt meen to say they didnt thrive here at some point or still do if you know where to look.
if i can be of assistance i will do whatever i can.
this promises to open a new page on the mystery.
Quick pass me a spade! I`ve had another idea.