Carrion flower

Carrion flower along the trail at Wildcat Creek.  There are four species of carrion flower in Indiana.  These are all in the Smilax genus which also includes the thorny greenbriar vines that are also common in the woods.  This one is probably Smilax lasioneura, but the Smilax carrion flower species are hard for me to tell apart.

Link to carrion flower species:

Link to Smilax carrion flower:

Link to Smilax lasioneura:

Photo taken May 3, 2015.