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.

leaves circinate-secund, ovate-lanceolate, gradually tapering to insertion, gradually narrowed to apex, 1.5–2.8 × 0.4–0.6 mm;

base not decurrent;

margins plane, sinuate proximally, serrate toward apex;

apex narrowly acuminate;

costa double, short, indistinct, less than 1/3 leaf length;

alar region slightly differentiated, of 3 or 4 cells at extreme basal angles;

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

medial cells 50–80(–90) × 3–4 µm. Sexual condition dioicous;

inner perichaetial leaves lanceolate, weakly or not plicate, margins slightly toothed or entire near apex.

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.

reddish, 1–2.5(–3) cm.

red-brown, 2.5–3 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).

erect to suberect, light brown, cylindric, 3–5 mm;

annulus 1–3-seriate;

operculum conic or rostellate;

endostome cilia unknown.