Flora of North America species comparison

1–3 cm.

15 cm.

stiffly erect-appressed when dry, erect-spreading when moist, narrowly lanceolate, 2.5–4 mm;

base not sheathing, shoulders absent;

margins recurved from near base to distal acumen, serrulate distally, teeth single;

apex narrowly aristate;

costa excurrent, abaxially prominent, distal abaxial surface rough;

basal laminal cell walls thin;

medial and distal cells 12–20 × 4–6 µm, prorulae low.

crisped when dry, erect-spreading or sometimes secund when moist, narrowly lanceolate to linear, 4–7 mm;

base laxly sheathing, shoulders well developed, firm;

margins revolute from shoulders to high in acumen, denticulate in shoulders, spinose-dentate distally, teeth paired;

apex long-subulate;

costa excurrent, prominent, distal abaxial surface rough;

basal laminal cell walls thin;

medial and distal cells 5–12 × 4(–10) µm, prorulae high.

0.1–1.5 cm, straight.

0.2(–0.8) cm, curved.

synoicous.

autoicous or synoicous.

erect, subglobose to ovoid, symmetric, 1.4–2 mm;

operculum conic convex;

peristome single;

exostome teeth 250–300 µm, striolate papillose proximally, smooth distally;

endostome absent.

inclined, subglobose to pyriform, asymmetric, 1.5(–2.5) mm;

operculum conic convex;

peristome double;

exostome teeth 500–550 µm, granulose proximally, papillose distally;

endostome basal membrane high, segments slightly shorter than teeth, striate papillose, cilia rudimentary.

22–26 µm.

15–24 µm.