Flora of North America species comparison

irregularly branched, smooth;

paraphyllia, when present, squamiform.

irregularly pinnate, smooth;

paraphyllia absent.

ovate, to 1.6 mm;

margins serrate, limbidium indistinctly present;

apex long, narrow, hair-point present;

costa ending before apex, abaxial surface smooth;

distal medial laminal cells short, isodiametric, 6–8 µm, multipapillose.

ovate-lanceolate to lanceolate, to 1 mm;

margins serrate, limbidium absent;

apex gradually tapering to narrow point, hair-point absent;

costa ending before apex, abaxial surface smooth;

distal medial laminal cells linear-rhomboidal, 9–15 µm, 1-papillose.

1–1.5 cm, rough.

to 1 cm, rough.

inclined to horizontal, broadly oval to suborbicular, 1.2–1.8 mm;

operculum long-rostrate.

horizontal, oblong-oval, 2–3 mm;

operculum broadly conic, short-rostrate.

12–15 µm, smooth.

9–12 µm, smooth.