These are the nuts of lithocarpus edulis or more commonly the Japanese stone oak. The nuts are edible, tasting like chestnuts when baked (according to a website). I often picked the acorns when I was a child but I saw green acorns (2nd photo) for the first time.
In Japan, the nuts of fagaceae trees are collectively called "donguri" and there's a famous song for children about an acorn falling into a pond "Donguri korokoro (i.e., Rolling acorn)."
When these pale brown acorns turn dark brown, I hope the temperature and the number of Covid-19 patients will both become lower...
Acorns in mid-August 8月中旬 |