Dendrobium and its Relatives http://books.google.com/books/about/...d=nYcXOI1r1DkC if you can find one that isn't too pricey - I think it's out of print ... I found an old library copy on eBay for not too much mula.
Old, but still somewhat reliable information. Knowing the deciduous types is a sort of ongoing learning experience. Some plants out there are hybrids, so they may or may not be deciduous, or possibly even semi-deciduous. Hope this helps...