Seta 0.3--1.3 cm. Capsule erect, straight to weakly arcuate, (0.5--)1.0--1.5(--2.0) mm. Spores 19--24 µm.

Capsule maturation date unknown. Clay soil in exposed and disturbed sites; elevations not recorded; N.W.T., Yukon; Alaska; Europe.

Trichodon cylindricus var. oblongus is an Arctic variety that differs from T. cylindricus var. cylindricus only in the shorter setae, shorter capsules that are more erect and often nearly straight, and somewhat larger spores.