Flora of North America species comparison

leaves loosely erect-appressed and ± loosely twisted when dry, elongate- to ovate-lanceolate, 2–3.5 mm;

margins revolute to below apex, entire;

apex sharply acute, sometimes acuminate, cuspidate, or apiculate;

basal laminal cells long-rectangular to rectangular, walls thin, sometimes nodose at insertion;

distal cells 9–14 µm, 1-stratose, papillae 2 or 3 per cell, conic or 2-fid, large.

leaves loosely erect-appressed when dry, elongate-lanceolate to lanceolate, 1.7–3.5 mm;

margins revolute proximally, recurved to almost plane near apex, entire;

apex ± narrowly obtuse, rarely bluntly acute;

basal laminal cells rectangular to short-rectangular, grading to quadrate at margins, walls thin, not nodose;

distal cells 7–13 µm, 2-stratose, rarely with few 1-stratose areas, papillae 1–3 per cell, conic, small;

marginal cells mostly to completely 2-stratose.

to 1.4 mm.

0.5–1 mm.

gonioautoicous.

gonioautoicous.

1/2–3/4 emergent, sometimes almost exserted, oblong-ovate when mature, oblong to short-cylindric when old and dry, to 1.4 mm, strongly 8-ribbed 2/3 to entire length, constricted below mouth when dry;

stomata immersed, 1/2 covered by subsidiary cells, cells projecting, inner walls thickened;

peristome double;

prostome absent;

exostome teeth 8, reflexed, densely and evenly papillose, striate-reticulate distally;

endostome segments 8 or 16, well developed, of 1 or 2 rows of cells, smooth or finely roughened.

1/2 emergent when dry, immersed when moist, oblong or oblong-ovate, 1–1.8 mm, strongly 8-ribbed to mid capsule or entire length, rarely with 8 very short intermediate ribs, sometimes constricted below mouth when dry;

stomata immersed;

peristome double;

prostome present, occasionally rudimentary;

exostome teeth 8, sometimes irregularly split to 16, incurved becoming spreading or rarely reflexed when old, coarsely striate-reticulate or striate-papillose;

endostome segments 8, not well developed, of 1 row of cells, short, finely longitudinally striate.

oblong, smooth, ± hairy, hairs strongly papillose.

oblong, smooth, sparsely hairy, hairs papillose.

10–15 µm.

10–17 µm.

asexual reproduction on leaves.

asexual reproduction absent.