That was the first time I've ever seen it, even though a trail at the place we were is named for them. By what I could find, they are parasitic. They fit more the fungus class than anything else. We didn't check the bases out but it looks like they may run off of tubers or stringers of some type. They do have a flower of some sort, but none that we saw were open yet. Those shots were with the Sigma 24-70. I didn't take a macro with me. I will be keeping an eye on them to see how they flower. It's possible I get back today with some close up stuff. The blooms I found on the interwebs can be different.
EDIT: I should also make it kinda clearer from the first post, the deep wooded areas did mean, (as Ken said), basically no light.