Plants: in thin mats or scattered, pale green to yellow-green. Stems 0.5--1.5 cm, brown to orange, weakly julaceous Leaves: strongly imbricate dry, broadly ovate or ovate-lanceolate, flat to somewhat concave, 0.6--1.4 mm, margins smooth, apex broadly acute, not hyaline, costa percurrent to short-excurrent as smooth point, laminal distal cells elongate-rhomboidal, 40--60 \um, 6:1, thick-walled, not or weakly sinuose Specialized asexual reproduction of small red-brown leafy bulbils in axils of leaves. Seta 2--3 cm, flexuose. Capsule erect or suberect, red, 1--3 mm, ovate-cylindric; peristome single, highly reduced, of unknown origin, segments and cilia lacking. Spores 8--15 \um.
Anomobryum concinnatum is a widespread boreal-temperate species, rarely with capsules, identical to material of the synonym A. leptostomoides in gametophyte features. Specimens assigned to the latter are few and produce erect capsules with highly reduced peristomes. These specimens have been interpreted as fertile specimens of A. concinnatum, a name with priority. Because A. concinnatum is rarely separated from A. julaceum, the distributions of the two in North America are tentative; A. concinnatum is the more widespread.