What is it?

Monday’s sunrise (see here and here) made me stop during my drive to work. As I made my way down the boardwalk to the observation deck (at Paynes Prairie), it seemed that the ground was covered with snow. I’m in Florida, so it can’t be snow! But, what is it? I looked closer, zoomed my camera and looked again… A web?

Here are the photos – take a look. What do you think?