Flora of North America species comparison

unbranched and sparingly branched;

axillary hyaline nodules weak;

central strand present.

usually unbranched;

axillary hyaline nodules 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 40 pairs, lanceolate to oblong-lanceolate, generally broadly acute, 0.4–1.5 × 0.2–0.3 mm;

dorsal laminae narrowed proximally, often ending well before insertion;

vaginant laminae 1/2–3/4 leaf length, ± equal, minor lamina ending on or near margin;

margin entire but often ± serrate distally, limbate on the vaginant laminae, infrequently limbate on dorsal and ventral laminae of perichaetial leaves, limbidial cells 1-stratose;

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

laminal cells 1-stratose, distinct, smooth, slightly bulging, firm-walled, irregularly quadrate to hexagonal, 8–11 µm. Sexual condition polyoicous, most frequently gonioautoicous;

naked antheridia often in axils of distal leaves.

to 6 mm.

1.75–6 mm.

dioicous;

perigonia and perichaetia on elongate stems;

naked archegonia at times in axils of distal leaves.

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

peristome taxifolius-type;

operculum ± as long as theca.

theca exserted, usually erect, radially symmetric, 0.4–0.8 mm;

peristome bryoides-type;

operculum 0.6 mm.

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

not seen.

14–20 µm.

1–2 per perichaetium, orange-red.

1 per perichaetium.