They’re called “naked ladies” here, also, but I deferred to the other name I’ve heard. ;)
You wouldn’t believe the story I could tell about trying to figure out their name from some of the locals here. The previous owner (the first owner was apparently a master gardener) had planted them, and I had NO IDEA, until someone figured out what I was trying to describe. Had a good laugh is all I can say, but my conversation was with a man behind a booth at the 4H garden show. I turned all shades of red when I figured it out. It sounded like he was suggesting something.