Flora of North America species comparison

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

to 3(–5) cm, comose from a wiry base, mostly unbranched.

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.

2.5–6 mm, loosely imbricate, erect and somewhat incurved when dry, plane and erect-spreading when moist;

sheath short-ovate, not hyaline-margined, abruptly contracted to the blade, the group of incrassate hinge-cells at the shoulders not much differentiated;

blade rather broadly oblong-lanceolate to linear-lanceolate;

marginal lamina erect, narrowly inflexed when dry, 1-stratose, 1–3 cells wide, toothed nearly to the shoulders with multicellular, uncinate teeth (rarely serrulate, but never entire), the teeth broadly triangular, (1–)3–7-celled, the terminal cell not much larger than the others;

costa percurrent or slightly excurrent as a short, smooth to denticulate point, smooth or sparsely toothed near the tip;

lamellae 20–30, entire or slightly crenulate in profile, 5–7 cells high, the marginal cells thick-walled and coarsely papillose, ± rectangular and flat-topped in section, broader than high, the lumen quadrate;

median sheath cells short-rectangular, thin-walled;

cells on abaxial surface of blade transversely elongate, 25–30 × 12–18 µm, with a median strip of cells shorter and ± isodiametric.

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

1–3.5(–5) cm, brownish, straight to flexuose.

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.

2–3 mm, erect to somewhat inclined, brownish;

exothecium mammillose, the cells short-rectangular, incrassate, appearing distinctly pitted in surface view;

peristome 350–450 µm, deeply divided from 0.8 to nearly to the base, the teeth slender, reddish brown with hyaline margins.

10–18 µm.

18–24 µm.