Modify uimport script to use scientific name

This script constructs a "name" from genus, species,
and cultivar in the check_species() function, but it
didn't actually use that constructed name to search for
species information from uimport csv's that have the scientific
name split up into separate fields.

The one line I changed here made the import process work for me, though I do not know if this is a change that should be committed to the main project. Can someone review this?