Lomariopsis lineata is a species of fern native to South East Asia.

[3] It is often incorrectly spelled "subwassertang" due to the German eszett's similarity to the Latin 'B'.

[4] Flora of China separates a Chinese form as L. cochinchinensis, but this plant is otherwise considered a synonym of L.

[9] In the aquarium industry, it is commonly confused with similar-looking liverworts of the genera Pellia and Monosolenium.

It was found to be most closely genetically linked to Lomariopsis lineata, though classification as a distinct species was not ruled out.

[8] Efforts to induce süsswassertang specimens to form a sporophyte have failed, which may indicate status as a new species.