Funny, Dave. I can just see the labelers now 'uh, yellow iris, why do they want us to write some silly stuff on it for a name? I'll just go with this short name for the whole batch.' LOL
I learned a long time ago that Granny smarts were based partly on experience and learned practices and a lot on superstition...... here is one I heard as a girl. To get rid of warts, steal a dirty dish cloth, take it outside by the light of the moon, find the stump of an ash tree and bury it on the north side of the stump, circle the stump three times...... a very good thing I did not get warts or my Mama would have been really perplexed over her missing dish cloths.... each one embroidered and crocheted with lace edgings.