''Sciaromiopsis sinensis'' is a species of

moss Mosses are small, non-vascular plant, non-vascular flowerless plants in the taxonomic phylum, division Bryophyta (, ) ''sensu stricto''. Bryophyta (''sensu lato'', Wilhelm Philippe Schimper, Schimp. 1879) may also refer to the parent group bryo ...

in the family Amblystegiaceae. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

, where it is known from only three locations. This is an aquatic moss that only grows in clear rivers and streams. It has not been seen since the first specimens were collected 100 years ago, and its known habitat is now polluted and heavy with

silt Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension (chemistry), suspension with water. Silt usually ...

, so it is possible that it has become extinct.''Sciaromiopsis sinensis''.
Swedish University of Agricultural Sciences. This moss forms glossy brown mats with branching stems up to 12 centimeters long.

References

Endemic flora of China Endangered plants Amblystegiaceae Taxonomy articles created by Polbot {{hypnales-stub