Flora of North America species comparison

0.2–0.6 cm.

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

2–4 mm, when dry loosely sheathing at the base, the blade narrow, curved and often hooked at the tips, erect-spreading and almost straight when moist;

sheath oblong to oblong-ovate, in leaves near the base of the shoot abruptly contracted to the blade, in distal leaves more gradually tapering, not hyaline-margined, with a narrow strip of incrassate cells at the shoulders;

blade narrowly lanceolate to linear, slenderly acuminate, ending in a short point;

marginal lamina ± plane, variable in width, 1-stratose, irregularly notched-dentate or at times almost entire;

costa smooth or weakly toothed abaxially near the tip;

lamellae 11–16, entire in profile, 4–8 cells high, the marginal cells larger and rounded in section, single or in pairs, smooth;

sheath cells short-rectangular;

cells of lamina 10–12 µm, subquadrate to irregular.

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.

1–3.5 cm, reddish.

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

2.5–4 mm, erect or nearly so, sometimes indistinctly angled;

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

operculum obliquely rostrate;

peristome 190–220 µm, divided to 0.8.

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.

9–12 µm.

10–18 µm.