Pearlweed, or the scientific name Micranthemum micranthemoides, is a small, freshwater aquatic plant commonly used in aquariums. This plant is often used as a ground cover due to its creeping nature and light green foliage. If you are looking for other synonyms for pearlweed, then there are several options available. These include Hemianthus micranthemoides, Large Pearl Grass, and Baby Tears. All of these names are commonly used to refer to the same plant species, but they may be more easily found under one name or another depending on where you are located or the aquarium community you belong to.