Gen. Musc. Frond.,258. 1901 ,
Etymology: For Viktor Ferdinand Brotherus, 1849–1929, Finnish bryologist
Found in FNA Volume 27. Treatment on page 365. Mentioned on page 359, 427, 440.
Plants small, 3–6 mm, in dense, yellowish to grayish green mats. Stems radiculose at base. Leaves erect-patent when dry, lanceolate, gradually contracted to a short, canaliculate apex; costa filling 2/3 of the leaf base, not sharply delimited from the lamina, excurrent, in transverse section with lax abaxial and adaxial hyalocysts and a median band of stereids; alar cells weakly differentiated, hyaline; basal laminal cells hyaline, of 8–10 rows, 2-stratose towards the costa, rectangular; distal laminal cells rectangular. Sexual condition dioicous. Seta 5–6 mm, yellowish, sinuose and twisted sinistrorse in the distal portion. Capsule erect, yellowish green, 0.5 × 1.2 mm, smooth, contracted towards the peristome; annulus present; operculum rostrate, half the length of the urn; peristome teeth 16, entire or rarely perforated, yellowish, striate at base and papillose at tips, 210–240 µm. Calyptra cucullate, fringed at base. Spores yellowish green, smooth, 10–13 µm; exothecial walls incrassate, variable, without stomata.
e North America, Mexico, Central America, Asia, Africa.