Authors: W. B. Schofield

Seta 3--6 mm, straight to somewhat arcuate. Capsule when mature ovoid to narrowly ovoid, 3--5 mm, the upper face with a perimeter ridge differentiating it from the lower, dull brown to greenish brown, not glossy. Spores 7--12 mm.

Capsules mature late summer--autumn. Commonly on rotten decorticated logs, but also on humus banks, mainly subalpine but also occasionally to near sea level, mainly in coniferous forest; 5--1500 m; Alta., B.C., Alaska, Calif., Colo., Idaho, Mont., Ore., Wash.

This endemic species may resemble B. aphylla, but the sporangium is never glossy chestnut when mature, but is dull and greenish-brown; the exostome is in 2--3 rows rather than one row as in B. aphylla.