Flora of North America species comparison

leaves stiff, loosely erect-appressed when dry, narrowly lanceolate to oblong-lanceolate, 1.4–2.9 mm;

margins strongly revolute to just before apex, entire;

apex obtuse to bluntly acute, not incurved when dry;

basal laminal cells subquadrate to short-rectangular, walls thin, not nodose;

distal cells 8–10 µm, 1-stratose, lumina irregular due to uneven wall thickenings, papillae 1–2 per cell, conic, low.

leaves loosely erect-spreading when dry, lanceolate, 2.5–4 mm;

margins revolute to just below apex, often wavy and slightly notched near apex;

apex gradually acuminate to long acuminate-cuspidate;

basal laminal cells elongate, walls thick, nodose;

distal cells 7–13 µm, 1-stratose, papillae 1 or 2 per cell, conic, size moderate.

to 1 mm.

1–1.5 mm.

gonioautoicous.

gonioautoicous.

emergent, oblong to ovate, 1–1.5 mm, 8-ribbed almost to base, ribs thin, delicate, not constricted below mouth;

stomata immersed, mid capsule, 1/2 to completely covered by subsidiary cells, cells projecting vertically over stomata, inner walls thickened;

peristome double;

prostome absent;

exostome teeth 8, splitting to 16 with age, reflexed, finely and densely papillose;

endostome often absent, or segments 8, well developed, of 1 row of cells, smooth.

immersed to fully exserted, usually 1/2–1/4 emergent, oblong-ovate to cylindric, 1.5–2 mm, smooth to slightly 8-ribbed;

stomata superficial;

peristome double;

prostome absent;

exostome teeth 16, separate to base, recurved, acute, obscurely and densely papillose;

endostome segments 16, separate to base, well developed, thick, stout, of 2 rows of cells, narrower than exostome teeth, usually not erose, yellowish brown, coarsely papillose.

oblong, smooth, naked or slightly hairy, hairs smooth.

conic-oblong, smooth, moderately hairy, hairs smooth.

15–19 µm.

17–29 µm.

asexual reproduction absent.

asexual reproduction absent.

with hairs absent.