Ranunculus arvensis was once a common species across much of the British Isles but is now much reduced in range, and continuing to decline, due to use of pesticides.
Main flower color:
Up to 40 cm
Arable fields, usually on calcareous soils
Around 10 mm in diameter, with five pale yellow petals and five shorter, hairy, greenish sepals, not reflexed. Flower stalks are covered by short hairs
Small capsules, armed with relatively long, thick, broad spines, each fringed with smaller spines
Yellowish-green, pinnately divided once or twice into narrow lobes, often shallowly further divided
May to July