While on our recent creep the girls and I came upon this beauty, I believe it's a San Pedro, they are all over the place. It flowers by night, and only lasts that night.
So seeing them up close is very cool. You can trip on the stuff (young plants work best) . Nothing to fool around with if your not familiar with.
You can see the stages of blooming correspond to the amount of daylight increasing. These are all pictures of the same plant. Now I have a funny feeling.