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.

0.5–1.5(–3) cm, green to yellowish, erect to creeping, strongly complanate-foliate, irregularly branched to unbranched, branches 0.1–0.3 cm;

hyalodermis present, central strand present;

pseudoparaphyllia foliose.

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. Sexual condition dioicous;

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

sometimes falcate, not strongly secund, ovate, curving to insertion, tapering to apex, 0.5–1.8 × 0.3–0.5 mm;

base decurrent;

margins plane, entire;

apex broadly acute;

costa double and short or ecostate;

alar region not conspicuously differentiated;

basal laminal cells shorter, wider than medial cells, yellowish, walls porose;

medial cells 80–100 × 4–5 µm. Sexual condition dioicous;

inner perichaetial leaves oblong-lanceolate, plicate, margins slightly toothed or entire at apex, costa obscure.

reddish, 1–2.5(–3) cm.

reddish, 2–4 cm.

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 arcuate, pale brown, short-cylindric, 1–2 mm;

annulus 2- or 3-seriate;

operculum conic;

endostome cilia 2–4.