Scientific name: Hemianthus micranthemoides Common terms: None, It used to be called Micranthemum micranthemoides and sometimes still is, so if you see a plant labelled as this it will actually be Hemianthus micranthemoides. Geographic origin: Distibuted over parts of central America. Type (stem, bulb, rhizome, floating etc.): Stem Max. size (height, width): Height - 3 to 15cm, Width - up to 10cm, can be grown as a carpeting plant. Lighting required: Medium - Very bright Temperature: 22 - 28 degrees C Water chemistry requirements (pH, hardness): Quite adaptable, I keep mine in hard water with a pH of 7.5, soft water is prefered, but a pH of 5-8 and very soft - hard water should be fine. Growth rates: Reasonably fast in good conditions. Demands: Relatively hard, a nutrient rich substrate and CO2 should be considered necesary. Mine seems to thrive with 2WPG and with lots of fertilisers and CO2. Additional info: Hemianthus micranthemoides is a very popular plant due to its small size and minute leaves. Once established it forms a dense cushion of fine, light green leaves. In my case it is used as a background plant in a nano tank, in larger setups it could be used as a foreground plant aslong as it is pruned regulary. In my experience it propagets via side shoots and acts like a carpet, even when let to grow vertically. It is probably one of the best fine-leafed stem plants available. A small compact bush of Hemianthus micranthemoides.