Ceratodon purpureus

Plants in open to dense tufts, turfs, or mats, green, dark green, brownish green, light green or yellow-green, usually darker proximally, often tinged reddish brown or purple. Stems (0.2–)1–3(–4) cm. Leaves crowded, erect-patent to contorted or somewhat crisped, rarely straight when dry, lanceolate, ovate-lanceolate, or triangular-lanceolate, 0.35–2.8 mm, margins recurved to near apex or rarely plane, irregularly serrate to uneven or smooth distally, apices acute to short-acuminate or, rarely, obtuse; costa strong, sub-percurrent to excurrent, sometimes as a long, smooth awn, medial laminal cells (6.5–)8–12(–14) µm, cell walls even, usually of medium thickness, often somewhat thicker and rounded at the cell angles. Seta 1–3(–4) cm, various shades of red, orange, or yellow. Capsule oblong to long-cylindric, (1–)2–2.5(–3) mm, smooth to strongly sulcate when dry; free to united at their nodes, finely papillose to spinulose-papillose, dark red and bordered to completely pale and absent borders. Spores (10–)11–14(–17) µm.

Ceratodon Purpureus

Ceratodon purpureus

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