I have prepared some more specimens, 9 cells each, to propagate from one lolon:

U. dichotoma
U. subulata (covered this tray over with Saran Wrap so it wouldn't spread to other plugs!)
U. prehensilis
U. tridentata
U. warburgii (only 3 cells of that; when they start to spread, I will start the rest)

When I am done, I will have some nice, established 1.5"x1.5" plugs to trade or gift.