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.

obovate, elliptic or less commonly ovate, apex broadly acute to occasionally rounded, awned or long-mucronate, margins strongly and broadly recurved in proximal 4/5 of leaf, not bordered;

costa long-excurrent, with an elongate adaxial pad of bulging, rounded cells with 3–4 simple papillae, distally narrow, 2–4 cells across adaxial surface;

distal laminal cells subquadrate, 12–16 µm wide, 1:1, smooth or less commonly papillose with 1(–2) scattered simple papillae.

0.6–1.5 cm.

ca. 0.4(–0.9) 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, elliptic or cylindric, or erect and nearly straight, urn ca. 0.8–1.2 mm;

peristome 100–150 µm, teeth 16, ligulate straight, or short, rudimentary, basal membrane lacking or very low;

operculum 0.5 mm.

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

15–18 µm, spheric, finely papillose.

exerted.

exerted.