Hemianthus callitrichoides is one of the world’s smallest aquarium plants. It was originally imported by Holger Windelov, who found it in a riverbed on Cuba, to the west of Havana. Its delicate stems with the tiny roundish to ovoid leaves have a creeping growth habit. When planted in small tufts at a distance of a few centimetres, the plant will soon spread and form an uninterrupted carpet. Hemianthus callitrichoides is an attractive foreground plant for small as well as large tanks.