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 lingulate, apex broadly acute to rounded, apiculate or mucronate, margins revolute or occasionally plane, often bordered proximally with rectangular cells usually hidden in the revolute margins;

costa percurrent or ending in apiculus or short mucro, with an adaxial pad of swollen cells similar to those of the lamina, distally broad, (4–)6(–8) cells across adaxial surface;

distal laminal cells subquadrate, 9–13(–18) µm wide, µm, 1:1; strongly papillose.

0.6–1.5 cm.

0.6–1.2 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 to ellipsoidal, erect and nearly straight, urn 0.9–1.5 mm;

peristome commonly 210–390 µm, teeth of 32 filaments, weakly twisted, occasionally rudimentary, basal membrane 40–50 µm;

operculum 0.5–0.7 mm.

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

15–18 µm, broadly ellipsoidal, nearly smooth.

exerted.

exerted.