Which plant has elaters in its sporogonium?

The sporogonium of Marchantia is divided into the foot, seta, and capsule. The capsule contains elaters (2n), which are diploid, spindle-shaped, elongated, and hygroscopic structures that help in the dispersal of spores. Riccia is a genus of liverworts, Selaginella is a genus of clubmosses, and Sphagnum is a genus of mosses, none of which have elaters in their sporogonium.