Plants medium sized, forming loose mats, dark green to blackish-green. Stems and branches long and slender, central strand absent, radiculose at base of attachment. Leaves rather flaccid, distant, erect-spreading, narrowly oblong to ligulate, 1.6-2 mm long, 0.3 mm wide, 4-5:1, apex bluntly acute; margins plane or folded on one side, reflexed at base, denticulate from about mid leaf, distally serrulate; lamina cells smooth, apical cells shorter, rhomboidal to fusiform; median cells linear, 70-80 µm long, 4-6 µm wide; basal cells oblong-rectangular, weakly porose, yellowish to golden; alar region differentiated, inflated, oblong or rectangular-rounded, 2-4 rows. Sporophytes not observed.

Plantas medianas, formando matas laxas, verdes oscuras a verde-negruzcas. Tallos y ramas largos y delgados, sin cordón central, radiculosos en la base de {attachment}. Hojas bastante fláccidas, distantes, erecto-extendidas, angostamente oblongas a ligulares, 1.6-2 mm de largo, 0.3 mm de ancho, 4-5:1, ápices obtusamente agudos; márgenes planos o doblados sobre un lado, reflexos en la base, denticulados desde ca. media hoja, distalmente serrulados; células de la lámina lisas, células apicales cortas, rómbicas a fusiformes; células mediales lineales, 70-80 µm de largo, 4-6 µm de ancho; células basales oblongo-rectangulares, débilmente porosas, amarillentas a doradas; región alar diferenciada, infladas, oblongas o redondo-rectangulares, 2-4 filas. Esporofitos no observados.