I've heard people, in passing/joking, call no-gi "American Jiu Jitsu." A claim is that no-gi takes in techniques from a variety of other grappling arts. There's also the 10th Planet system, focusing on no-gi training.
there are several american jj schools in the kansas city area, & they do pretty well in mma fights. one of my guys cross-trains with them. from what i've seen it's basically mma with a belt ranking system, which i don't have a problem with. of course, there's no place to wear your belt, since it's no-gi.
I saw this title and I thought it was going to be about the system developed by Len Lanius and published in his 1922 book: http://www.lulu.com/content/2734747
Well, it IS no-gi and draws from both wrestling and JJ.