Flora of North America species comparison

unbranched and sparingly branched;

axillary hyaline nodules weak;

central strand present.

usually profusely branched;

axillary hyaline nodules present;

central strand absent.

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.

in as many as 60 or more pairs, lanceolate, obtuse to rounded, to 3 × 0.5 mm;

dorsal lamina narrowed proximally, ending at insertion;

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

margin ± entire to crenulate, elimbate;

costa usually difficult to discern, ending a few cells before apex, variable in structure, basically taxifolius-type;

lamina cells 1- to 4-stratose at leaf margin, 2- to pluristratose in interior of dorsal and ventral laminae, 1- to 4-stratose in vaginant laminae, smooth, ± plain, quadrate to hexagonal, 7–13 µm long.

to 6 mm.

13–19 mm.

dioicous;

perigonia and perichaetia on elongate stems;

naked archegonia at times in axils of distal leaves.

dioicous (?);

perigonia not seen;

perichaetia on short axillary branches in medial leaves.

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

peristome taxifolius-type;

operculum ± as long as theca.

theca slightly arcuate, bilaterally symmetric, astomatose, exothecial cells quadrate to oblong, vertical walls thicker than horizontal walls, 1.5–2 mm;

peristome taxifolius-type.

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

20–23 µm.

1–2 per perichaetium, orange-red.