Only three posts on Trachycarpus are archived here.  Much more extensive and interesting discussion occured both around the time of these messages, and also later when Kiril Donov posted regarding his very hardy Bulgarian Trachys.  Unfortunately, I did not save any of this information.

From an e-mail, to which Tobias Spanner and Martin Gibbons both replied (Mr. Gibbons' comments are marked with "@@@"):

Concerning Trachycarpus martianus, in an e-mail from Tobias Spanner: