Hi Sergey,
okay, I only do not know the botanical names o f some wild gropwing trees with their botanical names but I iwll take some photoes of some where I am thinking which can be interesting for you! From Junglans nigra or from my Junglans regia with thin S´nut shells I have currently nuts from last autumn available.
From our local "German" Oaks I have collected many nuts last year for trying a told method to attract woodworms wooden things, but this method did not work therefore I threw al oaks away in winter...and I used concentrated vinegar for killing them - and, this worked....