Flora of North America species comparison

apex acute;

costa subpercurrent;

sheath clear or yellowish;

limb green, pellucid;

limb-sheath transition abrupt, not sharply angled;

limb margins strongly dentate in distal half, with fewer and smaller teeth below, and a few small sharp teeth at limb-sheath transition;

limb lamina cells (5–)7–16(–21) × (6–)7–12(–14) µm, with low rounded or flattened mamillae on the adaxial surface, abaxial surface smooth;

abaxial surfaces of sheath lamina cells smooth or with 1–6 papillae over lumen;

cells at leaf insertion not fragile and hyaline;

abaxial surface of limb costa smooth (rarely papillose near leaf apex), adaxial cells with rounded or somewhat flattened mamillae.

monoicous;

perichaetial leaves narrower than vegetative leaves.

plicate or puckered when dry;

exothecial cells with non-sinuose walls;

stomata on urn;

endostome cilia with numerous spine-like or branched-stellate appendiculations on the interior surfaces.

with a median longitudinal split, sometimes persistent on the neck of the capsule or seta.

not persistent on seta.

of the mid-limb lamina (6–)7–10(–12) µm wide (mean 8.5 µm);

cells of distal part of leaf sheath non-papillose on abaxial surface (rarely papillose in non-North American specimens).