Flora of North America species comparison

unbranched and branched;

axillary hyaline nodules absent;

central strand present or absent.

unbranched;

axillary hyaline nodules absent;

central strand absent.

as many as 20 pairs, elliptic to broadly lanceolate to oblong-lingulate, acute, short-acuminate to obtuse-apiculate, to 2 × 0.5 mm;

dorsal lamina narrowed proximally, ending before insertion to ± decurrent;

vaginant laminae 2/3–3/4 leaf length, equal;

margin ± entire but usually serrulate distally, limbate on all laminae, limbidium usually ending a few cells before apex, frequently edged by 1–2 rows of quadrate to oblong chlorophyllose cells in proximal parts of vaginant laminae, limbidial cells 1–2-stratose;

costa percurrent to ending 2–5 cells before leaf, infrequently short-excurrent, bryoides-type;

laminal cells 1-stratose, smooth, strongly bulging, densely chlorophyllose, ± obscure, firm-walled, irregularly quadrate to hexagonal, usually arranged in discernable rows in distal part of leaf, 6–10 µm, twice as deep as wide.

as many as 6 pairs, lanceolate, acute to obtuse, sometimes apiculate, to 2.2 × 0.5 mm;

dorsal lamina narrowed proximally, ending at insertion, not decurrent;

vaginant laminae 1/3–1/2 leaf length, equal;

margin entire but sometimes ± serrulate distally, limbate, limbidium 1–2 cells wide, ending before apex, often indistinct on vaginant laminae, limbidial cells 1-stratose; ecostate, or costa consisting of very short proximal vestige;

laminal cells 1-stratose, smooth, thin-walled, hexagonal to elongate-hexagonal, 31–67 × 14–34 µm, ± oblong in proximal portions of leaves, particularly in vaginant laminae.

to 9 mm.

to 3 mm.

gonioautoicous and rhizautoicous.

rhizautoicous;

perigonia gemmiform, proximal to perichaetial stems, and on elongate stems, to 1.2 mm.

theca exserted, inclined, bilaterally symmetric to erect, radially symmetric, to 1 mm;

peristome bryoides-type;

operculum 0.5 mm.

theca exserted, erect, radially symmetric, sometimes slightly arcuate, bilaterally symmetric, to 0.4 mm;

peristome scariosus-type;

operculum ± as long as theca.

cucullate, smooth, 0.8 mm.

mitrate, prorate, 0.4 mm.

10–16 µm.

9–13 µm.

1–2 per perichaetium.

1 per perichaetium.