Isoetes lacustris

Isoetes lacustris
Isoetes lacustris (Lake Quillwort or Merlin's grass) is a boreal Quillwort Lycopodiaphyte.

Isoetes lacustris and the larger I. malinverniana are often noted in aquarium literature, but there often appears to be a shortage of supply on account of the continuing decline in their natural occurrence, ...

See also: Aquarium plant, Aquarium, Water, Plants, Green