Flora of North America species comparison

2–5 cm, commonly branching by innovations, frequently dendroid.

0.2–0.3 cm.

2.5–6 mm, densely imbricate and crowded toward the stem and branch tips, erect-appressed and somewhat incurved when dry, reflexed and widely spreading when moist, gradually to rather abruptly contracted to the blade, the hinge-cells sharply differentiated;

sheath ovate to obovate, hyaline-margined on the flanks, with a wedge of incrassate hinge cells at the shoulders and extending a short distance up the blade margin;

blade broadly oblong-lanceolate to narrowly linear-lanceolate, only slightly concave, toothed from apex almost to the shoulders, or sometimes subentire;

costa percurrent or slightly excurrent as a subulate, serrate to smooth point, smooth abaxially or sparingly toothed towards the tip;

lamellae 30–46, entire in profile, 4–7 cells high, the marginal cells enlarged, thick-walled and coarsely papillose, in section rounded to elliptical, broader than high, the distal wall broadly convex, the lumen rounded pentagonal;

sheath cells short-rectangular to ± isodiametric approaching the blade;

cells on abaxial surface of blade 24–27 µm, irregularly quadrate, ± isodiametric, thick-walled, the transverse walls often thicker.

1.5–3 mm, incurved at the tips when dry, erect-spreading when moist, gradually tapering to the blade;

sheath oblong, entire, not hyaline-margined, the zone of incrassate hinge-cells at the shoulders not sharply defined;

blade lanceolate, broadly and bluntly pointed, appearing turgid and fleshy, entire;

marginal lamina erect, narrow, 1-stratose;

costa ending in the tip, smooth abaxially;

lamellae 25–40, entire in profile, 7–12 cells high, the marginal cells in section rounded, often thicker-walled, smooth;

sheath cells short-rectangular;

cells on the abaxial surface of blade 14–17 µm wide, thick-walled, longitudinally elongate in the median portion, subquadrate to either side.

1–4 cm, typically one per perichaetium but several per plant at the tips of branches.

(0.5–)1.5–2.5 cm, reddish, often twisted below the capsule.

2–3 mm, short-cylindric to ovate-cylindric, erect to inclined, light brown to reddish brown to blackish with age;

exothecium mammillose, densely areolate, the cells rounded quadrate, incrassate, with slit-like pits in the outer wall;

peristome 300–350 µm, divided to 0.6, the teeth rather broad, reddish brown with hyaline margins.

2–2.5 mm, ± asymmetric, suberect to inclined to almost horizontal;

operculum with a convex base and a short, rather blunt beak;

exothecium mammillose, the cells short-rectangular, thick-walled;

peristome to 300 µm, deeply divided almost to the capsule rim, the teeth reddish with hyaline margins.

10–18 µm.

13–18 µm.