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
Fruiting head globose with less than 50 achenes per head, achenes flattened. Basal leaves ovate to deltoid in outline, 2–6 cm diam., divided into 3, each segment toothed or further divided. Sepals 5. Petals pale yellow, ovate, 6–11 mm long. Achenes almost circular, 2–3 mm diam.. Pubescent tufted herbs to 60cm high. annual herbs. Irrigated or swampy lowlands Introd. from Europe. Pale Hairy Buttercup Ranunculus sardous