O.K., for those of you who may be experimenting with using a genealogy
program designed for people to track iris --
The trick for handling cultivars that are fertile both ways is to enter
each as a set of male/female twins. Always enter parents for introductions
and seedlings, even if you have to say "unknown". This way, you'll get a
"son of" or "daughter of" note when you select one from the drop-down list for
incorporation in later projects.
Feel free to write me off-list if you have questions.