Lithocarpus is a genus in the beech family Fagaceae, differing from Quercus in the erect male spikes. The World Checklist (see link below) accepts 334 species, though some other texts suggest as few as 100 species. About 100 Asian species of the genus were formerly treated in the genus Pasania. All are native to east and southeast Asia. These Asia... Found on http://en.wikipedia.org/wiki/Lithocarpus
(from the article `Fagales`) ...the Northern Hemisphere, again with the greatest diversity in eastern Asia. The 2 species of Chrysolepis are confined to the western United ... Found on http://www.britannica.com/eb/a-z/l/58