Flora of North America species comparison

ovate or elliptic to obovate, apex broadly acute to rounded or emarginate, short- to long-awned, margins narrowly recurved or revolute to near apex, commonly bordered distally with 2–4 rows of thicker-walled, papillose to smooth cells;

costa long-excurrent, lacking an adaxial pad of cells, distally narrow, 3–4(–6) cells across the convex adaxial surface;

distal laminal cells hexagonal, 10–15 µm wide, 1:1, strongly papillose with 2(–4)-fid papillae.

lingulate, apex rounded-acute, apiculate to short-mucronate, margins recurved from base to near the apex, not bordered;

costa subpercurrent, percurrent or very short-excurrent, lacking an adaxial pad of cells but distally narrowing or weakly thickened, 3–4(–5) cells across the convex adaxial surface;

distal laminal cells hexagonal, (12–)15–18 µm wide, 1:1, strongly papillose with 4–5 2-fid papillae.

0.6–1.5 cm.

1.2–1.5(–2.5) cm.

autoicous.

gonioautoicous.

stegocarpic, not systylius, cylindric, erect and nearly straight, urn 1.5–2.7 mm;

peristome 300 µm, teeth of 32 filaments twisted 1/2–2 times, basal membrane low, to 50 µm;

operculum 0.6–1 mm.

stegocarpic, not systylius, cylindric, erect and nearly straight, urn usually 3–4 mm;

peristome length 1000–1500 µm, teeth of 32 filaments twisted at least one full turn, basal membrane 300–600 µm;

operculum 1.3–1.6(–2) mm.

8–12 µm, spheric, finely papillose or essentially smooth.

11–15 µm, spheric, finely papillose.

exerted.

exerted.