The lava stone with a mature Microsorum pteropus large is a stone with 2 plants

Microsorum pteropus comes from Asia and grows 15-30 cm tall. It is a fern that can grow on a root or a rock, attached with fishing line until it has grown firmly. If it is planted in the bottom layer, the rootstock must not be covered, otherwise it will rot. It is easily propagated by carefully loosening and moving the small plants, which often form on old leaves, or by dividing the horizontal root stem (rhizome). It is a thrifty plant that grows in almost all conditions. The black spots that form on the underside of the leaves are spore houses (reproductive organs) and not, as is often assumed, a disease.