Flora of North America species comparison

unbranched and branched;

axillary hyaline nodules absent;

central strand weak.

unbranched and branched;

axillary hyaline nodules absent;

central strand usually 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 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 5 mm.

1.4–10 mm.

rhizautoicous and gonioautoicous.

polyoicous;

naked antheridia and archegonia often in axils of distal leaves.

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

peristome scariosus-type;

operculum to 0.5 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 0.6 mm.

cucullate smooth, to 0.5 mm.

9–13 µm.

10–20 µm.

1 per perichaetium.

1–2 per perichaetium.