Flora of North America species comparison

unbranched and branched;

axillary hyaline nodules absent;

central strand usually present.

unbranched;

axillary hyaline nodules absent;

central strand absent.

as many as 20 pairs, lanceolate to oblong-lanceolate or oblong-lingulate, acute to short-acuminate or obtuse-apiculate, to 0.8–2.7 × 0.2–0.5 mm;

dorsal lamina narrowed proximally, ending at or before insertion, infrequently slightly decurrent;

vaginant laminae 1/2 leaf length, mostly equal;

margin entire but often serrulate distally, limbate on all laminae, limbidium reaching apex or ending a few cells before or partially absent to infrequently completely absent, limbidial cells 1–3-stratose;

costa excurrent to ending as many as 6 cells before apex, bryoides-type;

laminal cells 1-stratose, distinct, smooth, often slightly bulging, firm-walled, irregularly hexagonal, a few elongate, 6.5–16 µm, somewhat larger in proximal parts of vaginant laminae.

as many as 4 pairs, lanceolate to oblong-lanceolate, acute to obtuse-apiculate, to 2.1 × 0.4 mm;

dorsal lamina ending before insertion;

vaginant laminae 2/5 leaf length, unequal, minor lamina narrowed, ending on or near costa;

margin of dorsal and ventral laminae ± entire to crenate-serrulate, crenate-dentate on vaginant laminae, elimbate;

costa percurrent to ending 2–3 cells before apex, bryoides-type;

laminal cells distinct, smooth, plane, firm-walled, irregularly quadrate to irregularly hexagonal, 10–15 µm, marginal cells slightly smaller, vaginant laminal cells somewhat larger with 2–3 intralaminal rows irregularly elongate.

1.4–10 mm.

2–9 mm.

polyoicous;

naked antheridia and archegonia often in axils of distal leaves.

rhizautoicous;

perigonia gemmiform, proximal to perichaetial stems or scattered over protonemata.

theca exserted, erect, radially symmetric to ± inclined, bilaterally symmetic, 0.2–1.2 mm;

peristome bryoides-type;

operculum 0.5 mm.

theca exserted, erect, radially symmetric, infrequently slightly arcuate, bilaterally symmetric, to 0.7 mm;

operculum 0.4–0.6 mm;

peristome scariosus-type.

cucullate smooth, to 0.5 mm.

cucullate, smooth, 0.5 mm.

10–20 µm.

11–14 µm.

1–2 per perichaetium.

1 per perichaetium.