One of several mosses sold as pearl moss, and a true moss rather than a liverwort: its rounded leaves have a clear midrib running to the tip, which the liverworts never have.
Light
medium–high
Difficulty
medium
Parameters
Plant typemoss
Growth ratevery slow
Tolerates lightmedium – high
Placementon stone and wood
Propagationdivision, daughter plants
Grows emersedyes
Appearance
Rounded leaves with a distinct midrib on shoots that creep or arch over. That midrib is the way to tell it from the liverworts sold under the same trade name.
Keeping
It grows both above water and submerged, and takes a wide range of light. Like every moss it is tied to wood or stone until it grips, and it collects debris in still water, so some flow suits it.
Placement
Tied to wood and stone, in nano tanks and at the front of larger layouts.
Propagation
By division: pull a clump apart and anchor the pieces.
Cultivars
The same plant with a different look: light, water and care are shared with the species.
Other varieties: Plagiomnium cf. affine, Plagiomnium cf affine, Plagiomnium cf affine in Vitro