Betula utilis of the tree's native distribution, several forms have orange- or copper-colored bark. "Betula utilis" var. "jacquemontii", from the western end of the native habitat, is widely used because several cultivars have especially white bark. These include: Those cultivars marked have gained the Royal Horticultural Society's Award of Garden Merit. "B. utilis" 'Fascination' has an orange- to mahogany-colored bark, which peels off to reveal a polished-looking layer underneath. The bark of 'Wakehurst Place Chocolate', as the name implies, is dark brown to nearly black. Betula utilis Betula utilis (Himalayan birch, bhojpatra, "bhūrjá") is a birch tree native to the Himalayas, growing
Mesoraphidiidae genera. Mesoraphidiidae are similar in overall appearance to modern snakefly species, having an elongated prothorax, giving a snake-like profile and from which the common name snakefly is derived. The family was likely tree-dwelling by nature, with larvae being active predators in trunks and branches. Female mesoraphidiids, where known and complete enough, have a long and densely annultated ovipositor which would have been used to lay eggs in crevices of bark. The family was restricted to the Northern Hemisphere, living in the warm temperate and paratropical forest belt that covered portions of Eurasia and North America. As currently described, Mesoraphidiidae contains