Lycopodiella cernua (L.) Pic.Serm.

Strobili nodding at maturity, always terminal on the branches; lateral strobili absent. Sterile leaves linear-subulate, arcuate-ascending, 2–4.5 mm long, 0.1–0.3 mm wide; the margins entire; the apex cuspidate. Sporophylls broadly ovate, narrowing into a long cuspidate, toothed, apical portion; the margins ciliate-fimbriate. Plants usually subscandent, up to 2.5m long, with a widely trailing rhizome rooting at intervals. Widespread. Moist cliff-faces; railway cuttings; RF