Flora of North America species comparison

mostly branched;

axillary hyaline nodules absent;

central strand present.

unbranched and branched;

axillary hyaline nodules absent;

central strand usually present.

as many as 60 pairs, somewhat undulate, oblong to lanceolate, acute, occasionally obtuse, to 3.5 × 1.2 mm;

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

vaginant laminae 1/2–3/5 the leaf length, ± equal, minor lamina ending on or near margin;

margin crenulate to regularly serrulate but irregularly serrate distally, elimbate;

costa ending 2–3 cells before apex to percurrent, taxifolius-type;

laminal cells usually 1-stratose, infrequently and irregularly 2-stratose in the dorsal and ventral laminae, distinct, smooth, ± plane, firm-walled, irregularly quadrate to hexagonal, 10–20 µm, 1–5 marginal rows usually thinner with slightly thicker walls, forming a lighter marginal band, juxtacostal cells larger, mostly oblong and pellucid;

vaginant laminal cells somewhat larger.

as many as 20 pairs, lanceolate to oblong-lanceolate or oblong-lingulate, acute to short-acuminate or obtuse-apiculate, to 0.8–2.7 × 0.2–0.5 mm;

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

vaginant laminae 1/2 leaf length, mostly equal;

margin entire but often serrulate distally, limbate on all laminae, limbidium reaching apex or ending a few cells before or partially absent to infrequently completely absent, limbidial cells 1–3-stratose;

costa excurrent to ending as many as 6 cells before apex, bryoides-type;

laminal cells 1-stratose, distinct, smooth, often slightly bulging, firm-walled, irregularly hexagonal, a few elongate, 6.5–16 µm, somewhat larger in proximal parts of vaginant laminae.

to 25 mm.

1.4–10 mm.

dioicous (?);

perigonia not seen;

perichaetia on short axillary branches, generally confined to proximal half of stems.

polyoicous;

naked antheridia and archegonia often in axils of distal leaves.

theca mostly ± inclined, ± arcuate, bilaterally symmetric, to 1.5 mm;

peristome taxifolius-type;

operculum to 1.5 mm.

theca exserted, erect, radially symmetric to ± inclined, bilaterally symmetic, 0.2–1.2 mm;

peristome bryoides-type;

operculum 0.5 mm.

cucullate, smooth, to 2.5 mm.

cucullate smooth, to 0.5 mm.

13–22 µm.

10–20 µm.

1 per perichetium.

1–2 per perichaetium.