Plants to 15 cm, wiry. Stems 1-2 mm wide across leafy stem, irregularly to regularly 1-2 (-3)-pinnate, often somewhat frondose or bushy, branches slender, innovations arching. Stem leaves erect-to wide-spreading, distant, broadly ovate to deltoid, slightly concave, 0.8-2(-2.5) × 0.8-1.5 mm; margins serrulate basally, spinose-serrate distally; apex gradually narrowed; costa usually double, sometimes single, single and 2-fid, or triple; medial laminal cells 30-65 × 4-7 µm. Branch leaves loosely imbricate, ovate, 0.4-1.2 × 0.3-0.8 mm; costa often single, but variable. Seta 2-4.5 cm. Capsule ovoid-ellipsoid, 1.5-2.5 mm.