dave, you are totally right! I could not believe it as the specimens I collected are much larger than any I have ever seen in France. They are indeed False Chanterelle. It reminded me that even the same species can look really different from country to country.
So, having gone back to the site and checked them out and been over my reference material again I gleaned the following.
Probably the easiest way to differentiate the
Chanterelle (Cantharellus cibarius) from the
False Chanterelle (Hygrophoropsis aurantiaca) is by looking closely at the gills. In the False Chanterelle the gills are decurrent extending down the stem like the Chanterelle but not as far, close, narrow, and
dichotomously forked (they split into two), often repeatedly forked, tend to have a 'wavy' appearance and often a lighter colour than the cap. The Chanterelle has blunt ridges rather than true gills which are narrow, vein-like,
irregularly forked and decurrent, extending often quite a way down the stem especially as they mature and open.
Check out the linked page for a very good photo of the gills on the False Chanterelle which shows this very clearly;
Hygrophoropsis aurantiaca - Gill Detail
Also the cap of the False Chanterelle is 'dry' with a downy feel whereas the cap of the Chanterelle is smooth and almost slippery when wet. As you noted the False Chanterelle tends to be rounder in shape and a more distinct incurved margin.
Telling the difference when the Chanterelle is small and young is not so obvious but the gills provide sufficient aid. Also it was fairly obvious that the stem of the False Chanterelle was a lot thinner than the true one which is noticeably thinner. Something that was no so obvious as they were old specimens.
Apologies for the confusion and thanks for setting me right and reminding me to make doubly sure when identing specimens.
I will post some further photos from today which should help further.