Plagiochila retrospectans

Plants forming yellow-green to bronze dense turfs. Specialised asexual propagules absent. Stems erect or arching away from substrate, circinate at apex; branches occasional and emerging from stem laterally and never next to a narrower leaf. Leaves asymmetrically broadly ovate, in mid-stem 1000–2500 μm long (from apex to closest attachment), 1100–2500 μm wide, rounded at apex with a tooth more prominent than other teeth, remote to imbricate, spreading obliquely from stem with dorsal margin close to level with stem and oriented vertically or surface angled toward stem apex and together with opposing leaf row appearing V-shaped from below, dorsal margin revolute, curved so that apex is positioned close to midline of leaf, ventral margin plane, with 20–100 teeth, most comprising 1–3 cells, but larger tooth at apex composed of up to c. 12 cells. Underleaves absent. Leaf cells quadrate near margin becoming circular to oblong in outline away from margin, 12 –28 μm long, 8–15 μm wide, more elongate at basal center and to 78 μm long and 20 μm wide, thin-walled with nodose trigones, also with intermediate thickenings near central base, evenly thick-walled near margin, with 2 oil bodies; oil bodies ellipsoid, hyaline, granular. Androecia on leading stems and branches, with 3–4 pairs of bracts, each with a single antheridium and denticulate like vegetative leaves. Gynoecia at apex of leading stem and branches; bracts similar to normal leaves but with larger marginal teeth. Perianth compressed obovoid, to 4000 μm long and 2500 μm wide; mouth truncate, ciliate.