Flora of North America species comparison

with branches 0.2–2 cm.

sometimes with lateral leaves spreading and dorsal and ventral leaves appressed, contracted, smaller;

supra-alar cells few to many, subquadrate, in 1 or 2 rows, often 1 row extending up margin.

with exostome teeth 16, subulate, striolate;

endostome basal membrane medium to high, segments equal to and alternating with exostome teeth, cilia 1–3, appendiculate.

smooth.

spheric, 12–22 µm, smooth to finely papillose.

asexual reproduction rare, by filamentous gemmae.

and perichaetia on stems or base of branches.