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 erect-appressed and straight when dry, ligulate, elongate- to ovate-lanceolate, 2–4 mm;

margins recurved-revolute to just below apex, entire;

apex acute;

basal laminal cells long-rectangular to elongate, walls thick, nodose;

distal cells 9–13 µm, 1-stratose, papillae 2 or 3 per cell, 2-fid, low.

to 1.4 mm.

1–2.2 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 to short-exserted, long-cylindric when mature, cylindric and constricted along entire length when old and dry, 1.6–2.5 mm, strongly 8-ribbed 2/3 capsule length;

stomata superficial;

peristome double;

prostome absent;

exostome teeth 8, erect when mature, reflexed to reflexed-recurved when old, coarsely and obscurely papillose or sometimes papillose-reticulate, deeply perforate, cancellate;

endostome segments 8, rarely 16, well developed, usually present when capsule is old and dry, narrow, of 2 rows of cells, papillose.

oblong, smooth, ± hairy, hairs strongly papillose.

conic-oblong, smooth, hairs few, papillose.

10–15 µm.

15–18 µm.

asexual reproduction on leaves.

asexual reproduction absent.