Flora of North America species comparison

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

4–8 cm, erect, simple, 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.

not or rarely seriate or spiraled, appressed on sterile and female stems, secund when dry, erect-spreading to falcate spreading when moist, ovate-lanceolate to lanceolate, 1.3–3 mm;

margins revolute, serrulate nearly throughout, teeth paired on mature leaves;

apex evenly and gradually acuminate;

costa subpercurrent to short-excurrent, 600 µm wide at base, distal abaxial surface weakly prorulose;

laminal cells prorulose at proximal ends;

basal cells rectangular, shorter, broader than distal;

juxtacostal cells at widest part of leaf 48–100 µm;

distal cells linear, 20–40 × 3–5 µm. Specialized asexual reproduction absent.

1.5–4 cm, flexuose.

4 cm, straight or flexuose.

dioicous;

perigonia discoid.

dioicous;

perigonia discoid.

1–2.5 mm.

2–3.5 mm.

spheric, 20–30 µm.

subreniform, 22–25 µm.