n North America, Mexico, West Indies, Central America, South America, Europe, Asia, Africa, Pacific Islands (New Guinea, New Zealand), Australia (including Tasmania).
Genera 5, species ca. 12 (4 genera, 6 species in the flora).
Meesiaceae are characterized by capsules with long necks that abruptly expand into the spore sac. The acrocarpous plants generally occur on peaty substrates, have undifferentiated alar cells, long setae, and often reduced diplolepidous peristomes.
|1||Leaves long-lanceolate to linear.||Leptobryum|
|1||Leaves ligulate, ovate-lanceolate, oblong, obovate, or elliptic||> 2|
|2||Leaves squarrose-recurved; laminal cell surface bulging-conic.||Paludella|
|2||Leaves erect to wide-spreading; laminal cell surface not bulging||> 3|
|3||Laminal cell walls lax, cells oblong-rhombic to oblong-hexagonal.||Amblyodon|
|3||Laminal cell walls firm, cells irregularly isodiametric to short-rhombic.||Meesia|