Ranunculus L. >
Petals yellow. Leaves sometimes divided into linear segments but then 1 mm wide or more and arranged in one plane only Ranunculus
Leaves lobed or deeply dissected
Either; sepals reflexed, or fewer than 5
Petals conspicuous, flowers >5 mm diam. Receptacle hairy.
Fruiting head cylindrical with 70–100 achenes per head, achenes not flattened. Stems thick, hollow. Leaves divided into 3 or 5 obtusely toothed or lobed segments. Petals pale yellow, scarcely exceeding the sepals. Carpels very small, numerous. Glabrous, erect, much-branched, annual herbs. Coast and Cumberland Plain. Wet places. Introd. from N. temp. regions. Fl. summer. Celery-leaf Buttercup Ranunculus sceleratus