Tuerckheimia guatemalensis Broth., Oefvers. Förh. Finska Vetensk.-Soc. 52A (7): 2. 1910.
Protologue: Guatemala. Livingston, im Küstengebiete des östlichen Guatemala, auf Gestein (H. v. Türckheim, in Herb. Levier) (NY).
Plants small, light-green. Stems 1–3 mm high, not branched, central strand absent, partial hyalodermis at times present; rhizoids red-brown, smooth. Leaves evenly spaced, spreading when wet, flexuous-spreading when dry, plane or concave, linear-lanceolate, 2.0–2.5 mm long; apices narrowly acute, subulate; margins plane, occasionally bistratose, crenulate by leaf cell papillae; costae percurrent, guide cells and two stereid bands present, ventral surface cells enlarged, smooth, dorsal surface cells small, thick-walled; upper cells homogeneous, quadrate to oblate, 6–10 x 8 μm, becoming short-rectangular to rectangular below mid-leaf, 12–26 x 8–10 μm, walls firm to thick, pluripapillose or mammillose; basal cells near costa enlarged. Dioicous (?). Perichaetia terminal, perichaetial leaves enlarged, somewhat ovate at base, acuminate. Setae 5–8 mm long, yellow to yellow-brown, smooth. Capsules exserted, cylindrical, lightly furrowed when dry, 0.5–1.0 mm long, yellowish brown; stomata not seen; operculum not seen; peristome rudimentary, present as a low, 2–3 cell, papillose membrane just exceeding the capsule mouth. Spores 8–12 μm, papillose. Calyptra not seen.