The Quercus is the main genus of the Fagaceae with about 300 to 600 species in the world. Both the vestiture and trichome types are important in the taxonomy of Quercus species and hybrids. Although particular terms have been used for a long time. the terminology for both vestiture and trichome types has not been standardized. https://stilleners.shop/product-category/suspension-control-arm-bolt/