Flora of North America species comparison

1.2–12 cm, central strand weak or absent.

1–10 cm, central strand indistinct or absent.

erect or curved, rarely (falcate-) secund when dry, ovate-lanceolate, sharply keeled distally, (1.3–)1.7–2.5(–3.2) mm, 1-stratose or rarely 2-stratose in striae distally;

margins usually recurved throughout or to just before the apex, usually denticulate distally, 1 or 2-stratose;

apices acute or sub-obtuse;

costa percurrent or excurrent as a smooth or weakly denticulate, occasionally decurrent awn, abaxial surface often papillose;

basal marginal cells usually quadrate;

distal laminal cells mostly short-rectangular, 8–10 µm wide, smooth, sinuose.

erect or curved when dry, ovate-lanceolate, sharply keeled distally, (1.2–)1.6–2.4 mm, 1-stratose, sometimes with 2-stratose striae distally;

margins recurved to near apex, often denticulate distally, usually 2-stratose, occasionally in more than one row;

apices acute;

costa percurrent or excurrent as a denticulate or spinulose, often flexuose, usually non-decurrent awn, abaxial surface papillose;

basal marginal cells quadrate or short-rectangular, usually trigonous;

distal cells short-rectangular, angular, or ovate, 8–10 µm wide, papillose, sinuose.

autoicous.

autoicous.

dark red or brown, short-cylindric, 0.7–1.3 mm;

exothecial cells usually quadrate, sometimes mixed with short-elongate or oblate cells, thin-walled, usually trigonous;

stomata present;

peristome patent or erect, often twisted, 350–600(–700) µm, red, densely papillose, usually perforated.

dark red-brown or brown, short-cylindric, 0.9–1.4(–1.75) mm;

exothecial cells isodiametric or short-elongate, thin-walled, sometimes with small trigones;

stomata present;

peristome patent to erect, twisted, red- or orange-brown, 300–500 µm, papillose, entire or weakly perforated.

11–14(–19) µm, granulose or smooth.

10–13 µm, granulose or verruculose.