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.

ovate to elliptic, occasionally lingulate, apex broadly acute, bluntly acute and muticuous or ending in a truncate or constricted mucro (in perichaetial leaves), margins revolute in proximal 1/2–2/3 of leaf, weakly bordered in distal 2/3 of leaf with 2–6 rows of thicker-walled, smaller cells;

costa subpercurrent or percurrent, occasionally excurrent, lacking an adaxial pad of cells, distally narrow, 2(–3) cells across adaxial surface;

distal laminal cells hexagonal to short-rectangular, width 13–18(–25) µm, 1(–2):1, smooth.

0.6–1.5 cm.

0.6–1 cm.

autoicous.

paroicous or 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, systylius and pushing the operculum off, cylindric, erect and nearly straight, urn 2.7–3.3 mm;

peristome remaining in the operculum, delicate, teeth fragmentary, of somewhat twisted filaments, basal membrane low, hyaline;

operculum ca. 1 mm.

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

15–18 µm, spheric, finely papillose.

exerted.

exerted.