Flora of North America species comparison

to 6 cm, usually shorter, somewhat denuded basally, irregularly branched;

hyalodermis poorly developed with outer tangential wall slightly thinner, epidermal cells small, walls thick, similar to or differentiated from subadjacent cortical cells, central strand present.

loosely appressed, imbricate, or loosely spreading, straight or falcate, little different when dry or moist, ovate, oblong-lanceolate, lanceolate, or rarely broadly ovate or broadly oblong-lanceolate, usually quite concave, (0.9–)1.1–1.8(–2) × (0.3–)0.5–0.8(–1.2) mm;

margins plane, folded along one side as wing or involute distally to become somewhat tubular, entire or with few small teeth in apex;

apex acute or gradually to abruptly long-tapering, may give appearance of apiculus due to involute margins;

costa double, usually short, slender, frequently one or both arms reaching mid leaf, rarely single to mid leaf or beyond;

alar cells 6–12, quadrate to rectangular, enlarged or inflated, walls thin, hyaline, dark red, or reddish brown with age, region clearly defined;

basal laminal cells shorter, or longer and wider than medial cells, walls incrassate, pitted;

medial cells fusiform-flexuose or linear-flexuose, 45–75 × 4–5 µm;

apical cells shorter;

marginal cells similar to medial cells.

yellow-brown to red, 1.3–1.6 cm.

autoicous;

perichaetial inner leaves linear-lanceolate, long, plicae 2–4, margins entire or coarsely serrulate in apex, apex acute to acuminate, costa variable.

with endostome cilia 2 or 3.