Sessile-leaved Tick Trefoil Posted on July 20, 2012 by Axie Reply Sessile-leaved means the leaves are basically growing right out of the central stalk with no leaf stems. You can see the green seed pods that grab onto passersby like ticks. Bean family. Native. Sessile-leaved Tick Trefoil (Desmodium sessilifolium) Share this:Click to email a link to a friend (Opens in new window)Click to share on Facebook (Opens in new window)Click to print (Opens in new window)Click to share on Pinterest (Opens in new window)