Probably not a guide Nigel or the palm centre would use
http://en.wikipedia.org/wiki/TrachycarpusWikipedia wrote:If any of the above is confusing, a simple fools guide to the Trachycarpus species is as follows.
Trachycarpus fortunei = bog standard fan palm with good cold tolerance
Trachycarpus nanus = dwarf fortunei
Trachycarpus takil = fortunei from somewhere you have to walk for 3 days to see. When you finally get there you wll be amazed by bog standard form. Soon to be available in two forms once court case is over.
Trachycarpus oreophilus = fortunei that looks good in mist
Trachycarpus martianus = actually slightly different than fortunei although not nearly as hardy. Named after the person who discovered it.
Trachycarpus latisectus - halfway house between fortunei and martianus
Trachycarpus naini tal - exotic name given to bog standard form of fortunei.
Trachycarpus manipur- wonderful photoshopped bog standard Trachycarpus that earned a pretty penny for its marketeers.
Trachycarpus geminisectus - rare and unusual bog standard fortunei from somewhere no one has heard of.
Trachycarpus wagnerianus -the most distinct form of fortunei
Trachycarpus princeps - fantastic palm with glaucous leaves
Trachycarpus princeps green form/nova = fortunei. No refunds.