Flora of North America species comparison

unbranched and branched;

axillary hyaline nodules absent;

central strand usually present.

unbranched and branched;

axillary hyaline nodules present;

central strand weak or absent.

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.

as many as 25 pairs, narrowly lanceolate to ovate–lanceolate, acute to sharply acute to short acuminate, to 1.9 × 0.3;

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

vaginant laminae 1/2–4/5 leaf length, ± equal, minor lamina ending on or near margin;

margin entire, limbate on all laminae, limbidium confluent at apex or ending shortly before apex, extending to base of dorsal lamina, limbidial cells 2–3-stratose;

costa percurrent to excurrent, bryoides-type;

laminal cells 1-stratose, distinct, smooth, ± bulging, firm-walled, elongate, 7–22 × 4–13 µm, increasing in size toward proximal part of leaf.

1.4–10 mm.

to 12 mm.

polyoicous;

naked antheridia and archegonia often in axils of distal leaves.

rhizoautoicous;

perigonia gemmiform, proximal to infertile and fertile stems.

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

peristome bryoides-type;

operculum 0.5 mm.

theca exserted, ± erect, radially symmetric to inclined, arcuate, bilaterally symmetic, 0.35–1.25 mm;

peristome bryoides-type;

operculum 0.25–0.3 µm. Calyptra cucullate, smooth, 0.5 mm.

cucullate smooth, to 0.5 mm.

10–20 µm.

11–18 µm.

1–2 per perichaetium.

1 per perichaetium.