Flora of North America species comparison

leaves stiff, erect-appressed when dry, narrowly lanceolate to ovate-lanceolate, 2–4.5 mm;

margins recurved to narrowly revolute to near apex, entire;

apex sharply to slenderly acute;

basal laminal cells elongate to rectangular, walls thick, ± nodose;

distal cells 6–13 µm, 1-stratose, papillae 1 or 2 per cell, conic and small, or 2-fid and low.

leaves erect-appressed when dry, ovate to ovate-oblong, 2–2.8 mm;

margins involute, entire;

apex rounded to obtuse;

basal laminal cells elongate-rectangular, walls thick, not nodose;

distal cells 7–12 µm, 1-stratose, papillae 2 or 3 per cell, conic, small.

to 1.8 mm.

0.5 mm.

gonioautoicous.

dioicous.

immersed, emergent, or slightly exserted, usually 1/3 emergent, globose ovate, ovate-oblong, or short-oblong, 1.3–1.8 mm, slightly or distinctly 8-ribbed 1/2–2/3 length;

stomata superficial;

peristome single, rarely double;

prostome large, conspicuous, or rudimentary;

exostome teeth 16, erect or sometimes spreading-recurved when old, smooth, scattered-papillose, or coarsely papillose-granulate;

endostome segments absent, or rarely 8, rudimentary, of 1 row of cells, smooth or roughened.

immersed, oblong, 1.8 mm, moderately 8-ribbed when dry;

stomata superficial;

peristome and prostome absent.

oblong, smooth, hairy or rarely naked, hairs finely papillose.

conic, papillose, naked, obscurely plicate.

13–21 µm.

18–20 µm.

asexual reproduction absent.

asexual reproduction by gemmae on adaxial surface of leaves.