Agave macroculmis

This is related to Agave salmiana var ferox and, if anything, should prove to be even better to grow in cultivation.  Gentry ' ...a high, montane species...generally between 2150 and 2800m....snow may fall at these elevations....it is a mesophyte, requiring relatively high rainfall, cold hardy and tolerant of some forest shade.'  It is large, with dark green, narrowly triangular leaves that are very broad at the base and armed along the margins with  large, prominent teeth.  In other words, sex on toast.  Is it available commercially ?  Nope.