Sorry, late to the discussion, but would the best way to represent this plant not be to put it under Aloe hybrid and provide its name either as a cultivar or also sold as?
This is done in the database for all the large flowered Echinopsis cultivars, which are the result of long hybridization efforts. Check for example Echnopsis hybrid, Echinopsis 'Sorceress'.
For Aloe x spinosissima one could list Aloe hybrid; Aloe 'xspinosissima' or also sold as Aloe xspinosissima.
