Butonwood or Buttonwood: How To spell?
The word Butonwood is misspelled against Buttonwood, a noun meaning "The Platanus occidentalis, or American plane tree, a large tree, producing rough balls, from which it is named; -- called also buttonball tree, and, in some parts of the United States, sycamore. The California buttonwood is P. racemosa."
Buttonwood has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings bu & onwood which should not be misspelled with single 'T'
Wrong Spelling:  bu-t-onwood  Correct Spelling:  bu-tt-onwood 
Check more misspelled words of Buttonwood to spell it correct.