Flora of North America species comparison

unbranched and sparingly branched;

axillary hyaline nodules weak;

central strand present.

unbranched and branched;

axillary hyaline nodules weak or absent;

central strand weak.

in as many as 25 pairs, often undulate, mostly lingulate, rounded to obtuse to broadly acute, sometimes apiculate, to 4 × 0.5 mm;

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

vaginant laminae 1/2–3/4 the leaf length, unequal, minor lamina of most leaves rounded and free distally, or narrowed distally and ending on or near costa;

margin ± entire to crenulate-serrulate, sometimes unevenly so distally, elimbate except for a weak limbidium in the proximal parts of vaginant laminae, limbidial cells 1-stratose;

costa ending several cells before apex, oblongifolius-type, distal part of leaf in transverse section showing enlarged cells arranged in a single row;

laminal cells of dorsal and ventral laminae 1-stratose, distinct, smooth, lenticularly thickened but appearing bulging, firm-walled, irregularly hexagonal, 7–12 µm long;

juxtacostal and interior proximal cells of vaginant laminae 1-stratose, smooth, plane, quadrate to ± oblong, larger;

medial marginal cells of vaginant laminae ± elongate, oriented obliquely.

as many as 22 pairs, ligulate to oblong-lanceolate, obtuse-mucronate to acute, to 4 × 0.3–0.5 mm;

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

vaginant laminae 1/2–2/3 leaf length, equal in proximal leaves, unequal in distal leaves, minor lamina ending between margin and costa or rounded and ending on or near costa;

margin entire but sometimes serrulate distally, limbate on all laminae, limbidium confluent at apex or ending a few cells before, limbidial cells 2- to 5-stratose;

costa percurrent or ending in mucro, bryoides-type;

laminal cells 1- to irregularly 2-stratose, smooth, slightly bulging, firm-walled, irregularly hexagonal, many somewhat elongate, 10–16 µm, juxtacostal and basal cells of vaginant laminae somewhat larger, quadrate to oblong.

to 6 mm.

4–4.5 mm.

dioicous;

perigonia and perichaetia on elongate stems;

naked archegonia at times in axils of distal leaves.

rhizautoicous or synoicous;

perigonia and perichaetia on elongate stems.

theca ± erect, radially symmetric to slightly arcuate, bilaterally symmetric, to 1.5 mm;

peristome taxifolius-type;

operculum ± as long as theca.

theca exserted, erect, radially symmetric to slightly inclined, bilaterally symmetric, 0.6–0.85 mm;

peristome bryoides-type;

operculum 0.4 mm.

cucullate, smooth, 1–1.7 µm. Spores 7.5–12 µm.

not seen.

14–25 µm.

1–2 per perichaetium, orange-red.

1–2 per perichaetium.