This isn't the first time I've run into strange Burl related stuff. Apparently he describes Banc Rhosgoch Fach as a stone row, but as far as I can see (almost) nobody else does...
http://www.themodernantiquarian.com/browse.php?site_id=2760
The Megalithic Portal has gone with Burl's description of this site, but having visited it I can't see any reason to doubt the records I've seen at the NMRW interpreting it as the remains of a dolmen (their words not mine FW).
Kammer x