Hemianthus callitrichoides is one of the smallest aquarium plants in the world, and creeps over the bottom with millimetre-sized round leaves. If planted in small clumps a few centimetres apart, it will spread rapidly and cover the bottom like a carpet. Hemianthus callitrichoides is an attractive foreground plant for small aquariums. Found on Cuba west of Havana.

Lilaeopsis brasiliensis is a short-stemmed plant that can be grown as a carpet in an aquarium. It is found throughout much of Brazil, and it grows both fully submersed and partially submersed on the banks of rivers and streams.It will grow to a maximum size of 3 inches (7.5 cm) in a home aquarium, and will form a dense and impressive carpet if it is provided the right mix of CO2, nutrients and lighting. This can be a somewhat difficult plant to grow, and should only be attempted by aquarists who have some experience with aquatic plants.