Man. Herbor. Suisse, 150. 1811.
Plants annual (or short-lived perennial?), not rhizomatous. Stems prostrate or ascending, branched, angled or grooved, 13–19 cm, retrorsely pubescent in 2 lines. Leaves petiolate; petiole 1–4 mm; blade 3 (–7) -veined, ovate to broadly ovate, 5–18 × 4–8 mm, margins ciliate, apex acute. Inflorescences 3–10 (–15) -flowered; bracts 1–15 mm, proximal foliaceous, distal much smaller, scarious. Pedicels ascending to erect, recurved in fruit, 4–15 (–22) mm. Flowers: sepals 4 or 5, midrib keeled, ovatelanceolate, 2–4 mm, margins broad, apex acuminate; petals 4 or 5, ca. 1.3 mm, ca. 1/2 as long as sepals. Capsules ovoid, 2–2.5 mm, shorter than sepals. Seeds reniform, 1 mm, smooth. 2n = 24 (Europe).
Phenology: Flowering early summer.
Habitat: Trails in forests
Elevation: 400 m
Introduced; Ohio, Eurasia
Moehringia trinervia was collected near Cleveland in 1990 on property that formerly was a resort community (R. K. Rabeler and A. W. Cusick 1994). It closely resembles Stellaria media; the multiveined, ciliate leaves, retrorse pubescence in two lines on the stems, broadly scarious sepals, capsules shorter than the sepals, and smooth, appendaged seeds distinguish it from S. media.