Arisaema triphyllum ssp. quinatum
Detail of Spathe
This spathe of this subspecies lacks the purple coloration and striping of the triphyllum ssp.
This subspecies is found much less frequently than subspecies triphyllum
and has a much narrower distribution in North America, limited to several southeastern states.
Source: http://www.uswildflowers.com/wflist.php
Auburn, Alabama