Neckera seductrix Hedwig, Sp. Musc. Frond., 208, plate 47, figs. 8-13. 1801; Cylindrothecium demetrii Renauld & Cardot

Plants in dense mats, green to golden brown. Stems to 10 cm, subpinnate, branches terete-foliate. Leaves erect, oblong-ovate to elliptic, 1-2 mm; margins plane, entire proximally, weakly serrulate distally; apex abruptly acute to apiculate; ecostate or costa double, short; alar region ± abruptly differentiated, 1-stratose, not or slightly reaching costa. Sexual condition autoicous. Seta reddish, 0.5-1.6 cm. Capsule cylindric, 2-3.5 mm; annulus 2- or 3-seriate, persistent; operculum obliquely rostrate; exostome teeth reddish, external surface smooth or faintly roughened proximally, finely papillose apically, not perforate; endostome segments smooth. Spores 13- 21 µm.

Rotten wood, bark at base of trees, soil, rock, dry hardwood forests; low to moderate elevations; Ont., Que.; Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W. Va., Wis.

Entodon seductrix is the most common species of Entodon in eastern North America. It is recognized by strongly terete-foliate branches, broad, abruptly acute to apiculate leaves, red setae, a persistent annulus, and essentially smooth exostome teeth (the only species of Entodon with this character). The capsule is usually somewhat wrinkled when dry and empty.