Flora of North America species comparison

1.5–3 cm, 0.8–1 mm thick when dry, profusely branched, irregularly pinnate, primary branches prostrate to arcuate, mostly attenuate, secondary branches attenuate at apices;

central strand cells not differentiated;

pseudoparaphyllia absent;

rhizoids somewhat abundant.

0.5–2 cm, 1 mm thick when dry, profusely branched, primary branches erect;

central strand cells differentiated, smaller;

pseudoparaphyllia absent;

rhizoids few.

appressed when dry, complanate when moist, ligulate, slightly narrowed mid leaf, 1.2–2(–2.2) mm;

base broadly decurrent;

margins plane, entire from base to apex (cells moderately mammillose at insertion), sometimes denticulate near apex;

apex acute, sometimes obtuse or slightly apiculate, intact;

costa strong, sharply ending a few cells before apex, sometimes fading in youngest leaves, not obscured by laminal cells distally, pellucid, abaxial costa cells smooth;

basal laminal cells hyaline or sometimes chlorophyllose, papillae few, region sometimes extending more than 1/2 length of leaf base;

distal cells quadrate, 6–8 µm, papillae many, branched.

julaceous, imbricate when dry, erect when moist, long-lanceolate, 0.8–1.4 mm;

base broadly decurrent;

margins revolute, entire;

apex acuminate, ending in hair-point, intact;

costa strong, ending well before apex, slightly obscured by laminal cells distally, pellucid, abaxial costa cells papillose, papillae thick, in 1 row;

basal laminal cells hyaline, smooth, region in basal 1/2–2/3 of lamina;

medial cells rhomboidal, 8–10(–12) µm, papillae many, slightly branched.

1–1.5 cm.

0.7–1.3 cm.

oblong, urn 1.6–2.8 mm;

stomata at base;

annulus not differentiated;

operculum obliquely short-rostrate, 1.3 mm;

exostome teeth irregular, 0.3 mm, striolate proximally, trabeculate and ± finely papillose towards apex;

endostome basal membrane 3 or 4 cells high, segments well developed.

elliptic, ovoid to oval-cylindric, urn 1–1.5 mm;

stomata at base;

annulus of 2 rows of cells;

operculum obliquely rostrate, 0.8–1.1 mm;

peristome well developed;

exostome teeth regular, 0.2–0.3 mm, trabeculate, striolate to mid tooth or beyond, conspicuously papillose at apex;

endostome well developed, basal membrane 7+ cells high, segments long, slender.

10–13 µm, densely papillose.

11–15 µm, densely papillose.

never beyond last branching points, leaves abruptly narrowed, costa to beyond mid leaf, ending near apex in most interior leaves, laminal cells smooth.

distal to last branching nodes, leaves elongate, apex long-acuminate, laminal cells smooth.