Have all the barnacles been found on sandy spots relatively far away from their stars.
I know the Merope 5C one is but whatabout the other ones?
Take a look at the second post of this thread...
The other system, Pleiades Sector JC-U blah blah, the planets with barnacles are pretty close to their star.
Actually, Merope 5C orbits a star fairly close, but it isn't the primary star in Merope.