Flora of North America species comparison

1–6 cm, erect, simple or 2-fid, tomentose proximally.

1–3 cm, erect, simple or sparingly branched, tomentose proximally.

erect-spreading when dry, somewhat divergent when moist, triangular- to slightly ovate-lanceolate, 1–2.3 mm;

margins plane or sometimes narrowly revolute, serrulate nearly to base, teeth single;

apex acuminate;

costa percurrent to long-excurrent, abaxial surface weakly papillose;

laminal cells rectangular, less than 9:1, prorulose, prorulae rounded, near distal ends or sometimes both ends on abaxial side;

basal cells oblong, 18–45 × 6–15 µm;

distal cells linear oblong, 20–30 × 4–8 µm. Specialized asexual reproduction by propagula sometimes borne in leaf axils.

laxly erect-appressed when dry, somewhat incurved and erect-spreading when moist, ovate-lanceolate, 0.8–1.2 mm;

margins narrowly revolute basally, plane distally, serrulate throughout, teeth single;

apex sometimes acuminate;

costa subpercurrent to excurrent, abaxial surface smooth;

laminal cells papillae 1, centric, on both sides (more prominent on adaxial side);

basal cells subquadrate to quadrate, 15–20 × 8–10 µm;

distal cells rectangular, 15–26 × 6–8 µm. Specialized asexual reproduction by slender brood branches in leaf axils.

1.5–4 cm, flexuose.

dioicous;

perigonia discoid.

dioicous;

perigonia somewhat gemmate.

1–2.5 mm.

spheric, 20–30 µm.

unknown.