Flora of North America species comparison

0.1–2(–3) cm.

0.4–2(–3) cm;

rhizoids brown.

weakly to moderately concave, 0.5–2(–3) mm;

margins plane to strongly revolute, limbidium distinct to weak, of 1 or 2 rows of elongate incrassate cells;

apex occasionally hyaline with age;

costa short- to long-excurrent, awn brown, yellow-brown, or sometimes hyaline, smooth or rarely somewhat denticulate, 1/4–3/4 leaf length;

proximal laminal cells abruptly quadrate to rectangular, 1–2:1 away from costa, 2–4:1 along costa;

medial and distal cells long-hexagonal, 12–18(–20) µm wide, (3–)4–6:1.

imbricate to loosely set, broadly lanceolate to narrowly ovate, weakly concave, 0.4–1.5(–2) mm;

base rarely weakly decurrent;

margins plane to weakly revolute proximally, entire to serrulate distally, limbidium absent;

apex acute;

costa percurrent to short-excurrent, awn slender;

alar cells quadrate, region differentiated;

proximal laminal cells gradually rectangular, 2–4:1;

medial and distal cells 60–100(–120) × 8–16(–20) µm, 6–8:1.

dioicous.

with endostome segments pale tan, brown, red-brown, or rarely pale yellow.

inclined or nutant, 1–3 mm.

8–14(–16) µm.

asexual reproduction rare, by deciduous brood branchlets in distal leaf axils, and rhizoidal tubers, red, spheric, 100–200 µm, cells smooth.

asexual reproduction by rhizoidal tubers, on long rhizoids or sometimes in proximal leaf axils and at stem base, brown, pyriform, 40–80 µm, cells 15–25 µm, smooth; rarely by bulbils in distal leaf axils, green, leafy, small.