Meadow Buttercup, Tall buttercup, Showy buttercup

Ranunculus acris

Physical Characteristics

Ranunculus acris is a PERENNIAL growing to 1 m (3ft 3in). It is not frost tender. It is in flower from May to July. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, flies, beetles, Lepidoptera (Moths & Butterflies). Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist or wet soil.

Distribution

Europe, including Britain, from Iceland south and east to Spain, through Asia to China and Japan.

Habitats

Lawn; Meadow; Bog Garden;

Edible Uses

Edible Parts: Leaves Edible Uses: Leaves - cooked and used as greens[257]. Some caution is advised, see the notes above on toxicity.

Medicinal Uses

Acrid Anodyne Antirheumatic Antispasmodic Diaphoretic Rubefacient Warts The whole plant is acrid, anodyne, antispasmodic, diaphoretic and rubefacient[4, 21]. The plant has been crushed and applied as a poultice to the chest to relieve colds and chest pains[257]. The fresh leaves have been used as a rubefacient in the treatment of rheumatism etc[222]. The flowers and the leaves have been crushed and sniffed as a treatment for headaches[257]. An infusion of the roots has been used in the treatment of diarrhoea[257]. The poulticed root is also rubefacient and was applied to boils and abscess[222, 257]. The plant sap has been used to remove warts[4]. The sap has also been used as a sedative[257]. The flowers are used in Tibetan medicine, where they are considered to have an acrid taste and a heating potency[241]. Their use is said to promote heat, dissolve tumours and draw out serous fluids[241]. They are used in the treatment of disorders brought about by rotting sores or wounds[241]. Use with caution[21], the whole plant is extremely acrid and can cause intense pain and burning of the mouth, mucous membranes etc[222].

Known Hazards

All parts of the plant are poisonous, the toxins can be destroyed by heat or by drying[4, 10, 13, 19, 62, 65]. The plant has a strongly acrid juice that can cause blistering to the skin[65, 183].