In article ,
Stewart Robert Hinsley wrote:

http://tinypic.com/m/b3nz2t/4

Can anyone Id this tree please?
The fruits tasted really bitter!!

It's a Carya. I'd guess at pignut (Carya glabra), but there is a
bitternut (Carya cordiformis) among the other species.

Why not a walnut (Juglans regia)? What have I missed?

Possibly my lack of familiarity with walnuts.

But I saw the fruits as ovoid, whilst a walnut has, I believe, a
spherical fruit.

The shape is normal for walnuts, because they start off pecan-shaped
and grow rounder as they mature.


Regards,
Nick Maclaren.