A new betony

For a few weeks, we'd been noticing this little "weed" growing happily in patches across the back yard. But I mostly ignored it until curiosity got the best of me. I took some photos and got some closer looks...hmmm, the flowers looked familiar...like henbit. More so, Texas betony! So I pulled out a field guide...nada. On to the Wildflower Center's database...bingo! I think we've got mousesear, also commonly called shade betony (Stachys crenata).