Fuller’s Teasel is possibly a carnivourous plant or protocarnivourous but only when it’s growing a flower stalk in its second year. It has cupped leaves that hold water around the stem like a moat. Bugs drown and are absorbed in a pool of water that might also might serve other purposes. It’s possible the wells are also for keeping leaf eating bugs from ascending the plant. It is a weed found in disturbed soils alongside roads and construction sites growing in full sun. Found this one growing right out back of my house.
Leaves holding water
Dead bugs and debris in a old dry well
Leaves holding water
Dead bugs and debris in a old dry well