There are 28 species of this genus of wasps in Florida.   This particular nest was not noticed until the paddler passed right against the muscadine vines on April 12, 2012.

To make these nests, to quote Professor Henry R. Hermann’s  blog, “…adult wasps position themselves with their head down (body oriented vertically to the ground) on a source of wood.  They use their mandibles to scrape the wood.  As it is scraped, saliva is added, and eventually the collected material takes the form of a round, moist ball of wood pulp which the wasp takes back to its nest.  It applies this material gradually to form the walls of paper cells, using their antennae as guides, in placing the pulp.”