pumpkinstrokemarrow

Not the pleasant resort town in the south of Tenerife where one or two relations by marriage had houses, rather the mysterious summer flowering trees with flowers very like those of the spring flowering horse chestnut.

We have now come across two such, one with leaves related to those of a chestnut and this one today with leaves quite unrelated, at least to the unbotanical eye.

So the question is, what are they? Our rather elementary tree books do not go so far as to allow identification by flower.