I'm getting in some regular baby tears, and in researching the plant, I realized that I have been mistakenly referring to it as HM (hemianthus micranthemoides). Evidently, HM is thought to be extinct, and what we are using in the aquarium industry is HG (hemianthus glomeratus). So, I updated my specs with the new name. Darn, I had finally memorized how to pronounce and spell micranthemoides.