Flora of North America species comparison

smaller proximally, distal leaves 2–4 mm, deeply concave, oblong-ovate to broadly obovate distally, acute to apiculate or short-acuminate, entire or weakly serrulate distally;

costa subpercurrent to short-excurrent;

distal laminal cells thin-walled and inflated, hexagonal or oblong-hexagonal becoming much more oblong proximally.

2–3 mm, imbricate, concave, scarcely contorted when dry, broadly ovate to obovate, abruptly narrowed to an acuminate tip, margin entire or nearly so;

laminal cells hexagonal to oblong-hexagonal distally, little differentiated at the margins, becoming elongate toward the base.

usually (12–)20–45(–80) mm, slender and flexuose, usually hygroscopic.

8–20 mm, straight to slightly flexuose, not or scarcely hygroscopic.

2–3.5 mm, pyriform, asymmetric, curved to straight, horizontal to pendent or merely inclined or nearly erect, becoming sulcate when dry below the strongly oblique mouth;

annulus revoluble, operculum slightly convex;

peristome brown, papillose-striate proximally and papillose distally, strongly trabeculate, becoming appendiculate distally, forming a lattice by fusion of the tips;

endostome segments lanceolate about 2/3 as long as the teeth, yellowish, finely papillose-striate.

2–3 mm, ovoid-pyriform from a short neck, asymmetric by the weakly oblique mouth, inclined to horizontal, becoming striate and nearly cylindric when dry and empty, annulus large and revoluble, operculum convex, exothecial cells narrowly oblong and transversely elongate in 3–5 rows below the mouth;

peristome teeth yellowish, lanceolate, somewhat trabeculate proximally, becoming hyaline and appendiculate, fusing to form a latticed dome, papillose striate proximally, papillose at the tips;

endostome segments about 1/4 as long as the teeth, bluntly 2-lobed or emarginate, papillose.

cucullate, smooth.

cucullate, rostrate, smooth.

mostly 12–21 µm, finely papillose.

18–30 µm, obscurely angled, finely papillose by low irregular ridges.