Bryum weigelii Spreng., Mant. Prim. Fl. Hal. 55. 1807.
Protologue: Czech Republic/Poland. In Sudeticis montibus ad pagum Roth–Zechau invenit Weigelius.
Plants large, pale‑green to yellowish green, in soft, loose tufts, 30–50 mm high; rhizoids sparse. Leaves 2–3. mm long, widely spaced, soft, shriveled and twisted when dry, erect‑spreading when wet, ovate to ovate‑lanceolate, long‑decurrent; apices acute to short-acuminate; margins plane or weakly recurved below, border indistinct, entire; costae subpercurrent to percurrent; upper cells irregularly oblong‑hexagonal, lax and thin‑walled 30–50 x 12–24 μm, basal cells irregularly rectangular, lax and thin‑walled, 34–60 x 14–24 μm. Dioicous. Sporophytes not known from Central America. Setae 35–45 mm long, red. Capsules 3 mm long, pyriform, pendent; opercula conic‑apiculate, 0.5 mm long; exostome brownish yellow, papillose, endostome yellowish hyaline, basal membrane to ½ of exostome teeth length, segments long, broadly perforate, lightly papillose, cilia 2–3, appendiculate. Spores 10–14 μm, lightly papillose (Allen 1995).