Danita said:That looks like a Skullcap/Scutellaria rather than a Salvia. The first thing I notice is that the calyx shape is wrong for Salvia, but is right for Scutellaria.
I'm not great at distinguishing between the different species of similar-looking Scutellaria, so I can't give a species identity. There are several species native to Arkansas.
One possibility is Heart-Leaved Skullcap (Scutellaria ovata)