I ran across this article from the palm beach palm and cycad society about 11 years ago.  Charlie Beck, the author, had a garden loaded with these palms and his observations are the best I have read/seen i one article.  His points about widespread hybridization of copernicias in cuba are also of interest.  In the cuban wilds they are prolific hybridizers.  Here is the link to a downloadable pdf with photos. http://www.palmbeachpalmcycadsociety.com/palms/documents/CoperniciaBaileyanaAndCoper