Betula albosinensis of Garden Merit. Betula albosinensis Betula albosinensis, the "'Chinese red birch"), syn. "B. bhojpattra" var. "sinensis", "B. utilis" var. "sinensis", is a species of birch in the family Betulaceae, native to Western China. It is a deciduous tree growing to . A particular feature is the peeling brown bark (cream when newly exposed). In fact the Latin specific name "albosinensis" means "white, from China". Brown catkins are produced in Spring. "Betula albosinensis" is grown as an ornamental tree for parks and large gardens, and numerous cultivars have been produced. The cultivars 'China Rose' and 'Red Panda' have gained the Royal
Citrus gummy bark viroid Citrus gummy bark viroid The citrus gummy bark viroid (abbreviated CGBVd) is a sub-species of the hop stunt viroid, and thus is a member of the genus Hostuviroid. As the name suggests, the citrus gummy bark viroid causes problems in the bark of the sweet orange tree. Scrapping the bark exposes localized spots or a line of reddish-brown, gum-impregnated tissue around the scion circumference especially visible near the bud union. The discoloration and gumming may extend above the bud union to the main branches of the sweet orange while in severe infection dark streaks of gum-impregnated tissue may also be