Elm phloem necrosis (elm yellows) is a disease of elm trees that is spread by leafhoppers or by root grafts. This very aggressive disease, with no known cure, occurs in the Eastern United States, southern Ontario in Canada, and Europe. It is caused by phytoplasmas which infect the phloem (inner bark) of the tree.he Elm Tree is also referenced in children's literature. An Elm Tree and Three Sisters is a children's book about three young sisters that plant a small elm tree in their backyard. Throughout the years, the sisters begin to realize that the elm tree becomes an integral part of their lives.
Halion. The Obsidian Sanctum is the black dragonflight area of the Chamber of Aspects. The entrance is in Dragonblight [59.3, 49.3] and accessed via a crack in the ice below Wyrmrest Temple. It holds one raid boss, Sartharion the Onyx Guardian, and his three drake lieutenants, Shadron, Tenebron, and Vesperon.
To begin the quest, speak with Duke Horacio, on the Second floor of Lumbridge Castle. The Duke asks you to take the air talisman he found to the Head Wizard located in the basement of the Wizards Tower. Speak with Sedridor, the Head Wizard, who is in the basement of the Tower. Sedridor is astonished at the talisman, and asks you to take a research package to his friend, Aubury, in Varrock. Take Aubury the package. His magic shop is located South of Varrock's East bank.