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.

oblong-lanceolate to obovate or long-elliptic, apex rounded-acute, mucronate to short-awned, margins recurved at base or somewhat higher, not bordered or bordered at base with 3–5 rows of thicker-walled cells, 1–3:1;

costa excurrent, lacking an adaxial pad of cells, distally very gradually narrowing, 3–5 cells across the weakly convex adaxial surface;

distal laminal cells rounded-hexagonal, 14–20(–28) µm wide, 1:1, not papillose or very weakly so.

0.6–1.5 cm.

1–2 cm.

autoicous.

autoicous.

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 3–6 mm;

peristome 1700–2000 µm, teeth of 32 filaments twisted at least 1 full turn, basal membrane high, ca. 1000 µm;

operculum ca. 1–2 mm.

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

12–18 µm, spheric, finely papillose.

exerted.

exerted.