Eucalyptus johnstonii - Tasmanian Yellow Gum, Yellow Gum, Brown Gum, Johnston's Gum (Tasmania) A very tall, straight forest tree with attractive apple-green leaves and smooth bark that peels in ribbons to reveal shades of orange, yellow and green.  Its wood is somewhat useful and it tolerates poor soil drainage.  Closely related to E. subcrenulata.  Slightly overrated for hardiness by many nurseries, but capable of surviving considerable cold when large.  4 to 14°F.
Photos of Eucalyptus johnstonii