Flora of North America species comparison

leaves erect-appressed, ± homomallous, triangular-lanceolate, 1–2(–2.5) × (0.2–)0.4–0.7(–0.8) mm;

base short-rounded, narrowly decurrent;

margins plane or often recurved in places, minutely serrulate to subentire, teeth in alar region small, conspicuous, recurved;

apex long-acuminate, acumen filiform, providing hyaline-villous aspect;

costa to 70–90% leaf length, often vanishing in plication, terminal spine sometimes present;

alar cells subquadrate, 6–7 µm wide, region of 6–9 × 5–8 cells, distinctly delimited, not reaching margins;

laminal cells linear-flexuose, 35–95 × 4–6 µm;

basal cell shape irregular, short, region in 2 rows, indistinctly delimited from more distal cells.

appressed when dry, spreading when moist, narrowly lanceolate, (0.5–)0.7–1.7 × (0.1–)0.2–0.4 mm;

margins plane or recurved at places, serrulate or serrate proximally, entire or minutely serrulate distally, teeth in alar region conspicuously recurved;

apex acuminate;

costa to 70–90% leaf length, disappearing in acumen, terminal spine sometimes present;

alar cells subquadrate, 6–7 µm wide, region small, distinctly delimited;

laminal cells linear-flexuose, 25–85 × 4–6 µm;

basal cells in 1 (or 2) rows;

distal cells smooth.

0.7–1.5 cm, rough.

phyllodioicous or dioicous.

erect, cylindric, sometimes slightly curved, 2–2.5 mm;

annulus separating by fragments;

operculum long-conic;

peristome hygrocastique;

exostome teeth with long transitional zone;

endostome basal membrane high, segments as long as teeth, very narrow, cilia very short or absent.

dimorphic; 10–14 µm or 16–20 µm.