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-lanceolate, 1.4–2 mm;

margins erect-incurved, entire;

apex obtuse;

basal laminal cells ± rectangular, walls thick, not nodose;

distal cells 13–18(–20) µm, 1-stratose, papillae 1 per cell, conic, large.

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.

1/2 emergent, oblong-cylindric, 1.6–2 mm, strongly 8-ribbed to base;

stomata superficial;

peristome double;

prostome absent;

exostome teeth 8, reflexed, evenly papillose, sometimes irregularly striate distally;

endostome segments 8, well developed, of 2 rows of cells, smooth.

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

short-conic, papillose, naked, not plicate.

13–21 µm.

20–25 µm.

asexual reproduction absent.

asexual reproduction by gemmae on both surfaces of leaf.