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
Alnus incana Alnus incana Alnus incana, the grey alder or speckled alder, is a species of alder with a wide range across the cooler parts of the Northern Hemisphere. It is a small- to medium-sized tree tall with smooth grey bark even in old age, its life span being a maximum of 60 to 100 years. The leaves are matte green, ovoid, long and broad. The flowers are catkins, appearing early in spring before the leaves emerge, the male catkins pendulous and long, the female catkins long and one cm broad when mature in late autumn. The seeds are small, long, and