About 40, see text Sematophyllaceae is a family of mosses,[1][2] known commonly as signal mosses.

[3] They grow on rocks in wet or humid places.

[3] and are found nearly worldwide, especially in tropical and temperate regions.

[4] There are about 150 species, which form yellow to yellow-green mats with reddish stems.

[4] The family Sematophyllaceae contains the following genera:[2][5]