Flora of North America species comparison

unbranched and sparingly branched;

axillary hyaline nodules weak;

central strand present.

branched;

axillary hyaline nodules absent;

central strand present.

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 20 pairs, lorate to lanceolate, acute to rounded, apiculate, to 2.35 × 0.35–0.65 mm;

dorsal lamina usually rounded proximally, ending at insertion, sometimes ending before insertion or slightly decurrent;

vaginant laminae 1/2 leaf length, ± equal, minor lamina ending on or near margin;

margin mostly crenulate on dorsal and ventral laminae, mostly serrulate on vaginant laminae and distally, elimbate;

costa variable in length, even on same plant, excurrent into apiculus to ending several cells before apex, taxifolius-type;

lamina cells 1-stratose, distinct, smooth, slightly bulging, firm-walled, quadrate to irregularly hexagonal, 6–15 µm, somewhat larger justacostally, marginal row thinner, paler.

to 6 mm.

dioicous;

perigonia and perichaetia on elongate stems;

naked archegonia at times in axils of distal leaves.

dioicous(?);

perigonia unknown;

perichaetia on short proximal stems and axillary in proximal leaves.

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

peristome taxifolius-type;

operculum ± as long as theca.

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

1–2 per perichaetium, orange-red.

, calyptra, and spores not known.