Gigaspermum repens (Hook.) Lindb.

Plants small, light green to glaucous green, scattered or loosely caespitose; terricolous. Branches erect, 2-5 mm high, arising from a light yellow, highly branched, long-creeping, aphyllus rhizome; in section rhizome round, central strand absent, cortical cells in 4-5 rows, larger, thin-walled, outer row narrower, branches in section round, central strand indistinct, cells small, thin-walled, cortical cells in 3-4 rows, thin-walled. Leaves distant, erect-spreading, concave; orbicular-apiculate, 0.5-0.8 mm long; apiculus of several clear cells; margins plane, entire. Costa absent. Laminal cells angular, quadrate to subhexagonal, smooth; basal cells short-rectangular. Autoicous. Perigonia axillary. Perichaetia terminal on erect branches, leaves highly differentiated; elliptical, long-acuminate, to 2.5 mm long; laminal cells rhomboidal to rectangular, hyaline. Seta very short, 0.3-0.5 mm long, yellowish; capsule immersed, gymnostomous, cupulate, 0.8-1.0 mm long, brownish yellow, mouth very broad; exothecial cells lax, quadrate to hexagonal, smaller in base, at mouth with single row of transversely rectangular cells; stomata present at base of urn, phaneropore; peristome absent; operculum plano-convex, apiculate, cells not twisted; calyptra small, campanulate; spores rounded to angular, 80-100 µm, reddish brown, finely granulate.