Cotula paludosa Hilliard

A stoloniferous mat-forming perennial herb, stolons simple or branched with scale leaves only, sometimes rooting at the nodes and always at the apex, there producing a new leaf rosette, whole plant more or less glabrous; flowering stems terminal, up to c. 18 cm tall, simple, leafy in the lower part, leaves rapidly becoming smaller upwards and passing into bracts, nude in the upper part, scarcely swollen below the head. Radical leaves up to c. 10 x 2 cm, at least half of this petiole, blade oblong in outline, bipinnate, lobes linear, up to 6 x 1 mm, silky-villous in the bud, soon glabrous, petiole flat, base expanded, clasping. Stem leaves similar to the radical but rapidly becoming smaller and once-pinnate, passing into bracts. Heads homogamous, solitary, depressed-globose, 10-15 mm across. Involucral bracts in c. 3 series, glabrous, margins scarious. Receptacle flat, outer pedicels 0.75-1 mm long, gradually shorter inwards. Flowers bright yellow, reddening with age. Achenes 1-1.25 mm long, compressed, faces slightly convex, narrowly winged, often with a poorly developed median wing or ridge on one or both faces, not becoming mucilaginous when wet.