The biggest is the longleaf blolly, which checks in at 103 points with a girth of more than 5 feet.
Blolly, to answer your question, is short for loblolly, an old British and nautical term for the "thick gruel" that came to Americans' minds when they saw the mud holes and swampy depressions where blolly (and loblolly pine) grows.
Of similar size to the champion blolly is the largest of Nemec's nominations, the 95-point hypelate, which he and other botanists call white ironwood.