Flora of North America species comparison

2–6(–10) mm, erect, simple except for a basal antheridial branch.

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.

crispate to contorted when dry, erect to spreading when moist, oblong-ovate to broadly obovate, concave, 1.5–3(–10) mm;

apices acute to acuminate;

margins entire to serrate distally;

costa single, subpercurrent to excurrent;

proximal laminal cells elongate-rectangular, distal cells rhombic-hexagonal to rectangular.

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

erect to strongly curved or twisted, (3–)7–20(–80) mm.

autoicous;

antheridial branches 1–2, basal, perigonial paraphyses clavate with an enlarged inflated cell.

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.

stegocarpous, usually inclined to pendent, exserted, asymmetric and usually curved, pyriform, 1.5–3 mm, often sulcate or plicate when dry and empty;

exothecial cells oblong-hexagonal to linear, walls incrassate especially so on inner tangential wall;

stomata immersed;

annulus large and revoluble or not differentiated;

operculum convex to weakly conic, usually oblique to the axis of the capsule, cells in obliquely radial rows;

peristome double, teeth well developed, oblique, lance-acuminate, papillose-striate, often strongly trabeculate, frequently appendiculate at the tips and fusing with a latticed disk, endostome segments opposite the teeth, 1/6 or more the length of the teeth, papillose or weakly papillose-striate with a basal membrane, cilia absent.

cucullate, smooth.

cucullate, often long-rostrate, large, usually smooth.

mostly 12–21 µm, finely papillose.

spherical, smooth or papillose to baccate-insulate.