Flora of North America species comparison

unbranched and branched;

axillary hyaline nodules present;

central strand weak or absent.

, except for initial stages, growing from a 2-sided apical cell.

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.

distichous, equitant, complex in form, consisting of two vaginant laminae that clasp the stem, a ventral lamina located above the vaginant laminae, and a dorsal lamina that occupies the length of the leaf opposite the vaginant and ventral laminae;

costa single, usually well developed, near center of leaf, sometimes reduced, absent or nearly so.

to 12 mm.

elongate.

rhizoautoicous;

perigonia gemmiform, proximal to infertile and fertile stems.

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.

cylindric, peristome single, teeth 16, haplolepidous, endostomate, usually divided 1/2–2/3 their length, sometimes irregularly divided or undivided, sometimes reduced, (rarely absent).

cucullate.

11–18 µm.

1 per perichaetium.