Flora of North America species comparison

unbranched and branched;

axillary hyaline nodules absent;

central strand weak.

mostly branched;

axillary hyaline nodules absent;

central strand present.

as many as 12 pairs, oblong to lanceolate, acute to obtuse-apiculate, most ending in a clear, sharp cell, to 1.8 × 0.4 mm;

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

vaginant laminae 1/2–2/3 leaf length, unequal, minor lamina ending near margin;

margin serrulate, limbate and entire to remotely denticulate on proximal 2/3 or less of vaginant laminae of most leaves of perichaetial stems, often absent from leaves of infertile stems, limbidium intralaminal in part or completely, limbidial cells 1-stratose;

costa ending 2–4 cells before apex or percurrent, ending in apiculus, infrequently short-excurrent, bryoides-type;

lamina cells 1-stratose, pluripapillose, obscure, firm-walled, rounded-hexagonal, 5–8 µm, twice as deep as wide.

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.

to 5 mm.

to 25 mm.

rhizautoicous and gonioautoicous.

dioicous (?);

perigonia not seen;

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

theca exserted, erect, radially symmetric, to 0.8 mm;

peristome scariosus-type;

operculum to 0.5 mm.

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

peristome taxifolius-type;

operculum to 1.5 mm.

cucullate, smooth, to 0.6 mm.

cucullate, smooth, to 2.5 mm.

9–13 µm.

13–22 µm.

1 per perichaetium.

1 per perichetium.