Hemianthus callitrichoides
Hemianthus callitrichoides is an aquatic plant commonly used as a foreground or carpeting plant in planted aquariums. The plant is native to Cuba and has relatively high light and CO2 requirements to grow well in an aquarium. Once planted, each portion will produce runners which basically are individual stems that branch off and grow along the substrate.
Hemianthus callitrichoides was first collected by Holger Windeløv and Eusebio Canicio Delgado Pérez in 2003 in Las Pozas, Cuba, about east of Havana. Unlike the related Hemianthus micranthemoides, H. callitrichoides is thought to be native only to Cuba.