Thursday, December 29, 2011

Identify this Asteraceous plant

While exploring the mid-Applachian shale barrens, there was a rather impressive member of the Asteraceae that we found in a couple of locations.  I have yet to identify this plant.  Anyone out there have any ideas?

This plant formed basal rosettes of large, cordate (heart-shaped) leaves with undulating margins.  The towering inflorescence was born from the center of the rosette and plants could be found in both flower and with mature seeds as of late September.  The flowers superficially resemble those of the genus Silphium.  Any ideas?