We had 9 votes and 4 of you got it right. Thanks for not cheating and creating 100% accurate results! According to wikipedia (so, you know, take it with a grain of salt) there are over 700 species of eucalyptus.
My favorite is eucalyptus deglupta, also known as the rainbow eucalyptus. It’s one of only 4 species of eucalyptus not native to Australia, go figure. I haven’t seen it in the wild, although the Royal Botanic Garden has some.