I’m saying this is a Dog Stinkhorn because it is the most likely to be found in our woods. There are a couple other Phallus types of stinkhorn that look similar – see this website:
These mushrooms have a sticky slime that is an olive/brown color. This contains the spores of the mushroom and insects drawn to the smell act as pollinators by spreading the spores.
This photo was taken June 15, 2011, in Green Lane, PA, in a hardwood forest.
Try these sites for more detailed info: