Flora of North America species comparison

unbranched and branched;

axillary hyaline nodules absent;

central strand usually present.

unbranched;

axillary hyaline nodules absent;

central strand present 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 12 pairs, lanceolate to oblong-lanceolate, occasionally narrowly lanceolate, acute to rarely apiculate, to 1.2 × 0.2–0.3 mm;

dorsal lamina narrowed proximally, ending at or sometimes before insertion;

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

margin entire but serrulate to denticulate distally, limbate on all laminae, limbidium ending a few to several cells before leaf apex, not reaching proximal end of dorsal lamina, sometimes edged by 1 or more rows of quadrate cells in proximal part of vaginant laminae, limbidial cells 1-stratose;

costa ending a few cells before apex to percurrent, bryoides-type;

laminal cells 1-stratose, smooth, strongly bulging, ± obscure, firm-walled, irregularly quadrate to hexagonal, mostly 6.5–10 µm, in transverse section twice as deep as wide.

1.4–10 mm.

1–4.5 mm.

polyoicous;

naked antheridia and archegonia often in axils of distal leaves.

rhizautoicous.

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

peristome bryoides-type;

operculum 0.5 mm.

theca exserted, usually erect, radially symmetric, 0.2–0.8 mm;

peristome bryoides-type;

operculum 0.3 mm.

cucullate smooth, to 0.5 mm.

cucullate, smooth, 0.5 mm.

10–20 µm.

10–16 µm.

1–2 per perichaetium.

1–2 per perichaetium.