Flora of North America species comparison

1–8+ cm, pale to yellowish green, brown with age, creeping to erect, complanate-foliate or not, irregularly pinnate to nearly unbranched, attached shoots often regularly pinnate, branches 1–3 cm;

hyalodermis absent, central strand poorly developed;

pseudoparaphyllia filamentous, 1–3-seriate at base.

and branch leaves falcate-secund, broadly ovate-lanceolate, curved to insertion (sometimes markedly), gradually narrowed to apex, 1.4–1.6 × 0.5–0.6 mm;

base not decurrent;

margins plane, serrulate distally;

acumen slender;

costa double, short;

alar cells subquadrate to rectangular, gradually enlarged, region distinct, outermost cell walls thinner, basalmost cells hyaline, walls thinner, cells often tearing away with enlarged stem cortical cells;

basal laminal cells shorter, wider than medial cells, yellowish or unpigmented, walls thickened;

medial cells (50–)60–80 × 3–4 µm.

strongly imbricate, not to decidedly falcate-secund, ovate to oblong-lanceolate, gradually or abruptly narrowed to apex, 1.5–2 × 0.5–0.8 mm;

base not decurrent, not auriculate;

margins recurved to plane proximally, serrulate (sometimes weakly) distally, occasionally nearly entire;

acumen slender;

costa double and short or obscure;

alar region well defined, basalmost cells larger, sometimes hyaline, yellowish or brownish;

basal laminal cells shorter, wider than medial cells, not pigmented, walls not pitted;

medial cells (50–)60–80 × 3–4(–5) µm.

reddish, 1–2.5(–3) cm.

pale reddish, 1.5–2.2 cm.

dioicous;

inner perichaetial leaves oblong-lanceolate, margins serrulate distally, costa obscure.

dioicous or phyllodioicous;

inner perichaetial leaves oblong-lanceolate, margins serrulate distally, apex slender, costa obscure.

slightly inclined, reddish, cylindric, 1.8–2.5(–2.8) mm;

annulus 1–3-seriate;

operculum conic to rostrate;

endostome cilia 1–2(–3).

inclined to horizontal, red-brown, oblong-cylindric, 1.5–1.8 mm;

annulus 1- or 2-seriate;

operculum conic;

endostome cilia 2 or 3.