North America, Europe, Asia, Atlantic Islands, Pacific Islands.
Genera 14, species ca. 50 (3 genera, 7 species in the flora).
Lembophyllaceae are largely a south-temperate family, but also extend into the tropics. The plants tend to have terete-foliate stems with ovate, concave leaves. The costa is variable, sometimes on different leaves of the same plant. Many of the genera have perfect hypnoid peristomes, but there are genera (for example, Bestia) with reduced peristomes. The calyptrae being frequently hairy is an unusual character in the flora area.
|1||Costae short and double or rarely single in isolated leaves; stem and branch leaves differentiated.||Tripterocladium|
|1||Costae single; stem and branch leaves similar||> 2|
|2||Medial laminal cells less than 4:1; capsules erect; peristome reduced.||Bestia|
|2||Medial laminal cells more than 5:1; capsules suberect, inclined, or rarely erect; peristome perfect.||Isothecium|