Never mind, nearly certain I just figured it out. UTRICULARIA GIBBA. Damn.
EDIT: I guess now I get the fun of deciding the lesser of two evils. Do I spend hours combing through the riccia mat with a magnifying glass and tweezers trying to remove every bit of this junk, or do I toss out an otherwise extremely nice bed of ricca thats been developing in my tank for a bit now... :icon_cry: