You can find this particular plant EVERYWHERE right now, or at least it is dominant in unkempt lawns. A few interesting links for further information can be found here, and here. You can also find quite a bit of medicinal research on this plant on pubmed. It has quite a bit of medicinal history.
We also found a broken snail shell that fascinated the children. We have quite the collection of shells, but they had never seen one the interior of one before, and this one was almost split in half.
So...still a successful morning out of doors. Hikes come and go, but a snail shell treasure was waiting for us this day.