About 8" tall, this lacy stinkhorn was ephemeral -- I saw it whole and gorgeous while out on a walk without my camera, but when I returned a couple of hours later it had already deteriorated to this state. When first seen, the outline of the tip was like a rounded arrowhead with a hole in the top. The constricting band looks like napkin ring. It is dark brown and slimy with spores.
On rainforest floor in moderately dry conditions, on the north bank of the Amazon River, Peru
Lesson learned: Never go for a walk in the rainforest without your camera! There's a great photo of one here: http://mushroaming.com/Amazing_Amazon just scroll down a page or two.