Meadow buttercup (Ranunculus acris)
Description
“Pet poisonous” – Toxic parts: entire plant esp. leaves Ranunculus acris is a species of flowering plant in the family Ranunculaceae, and is one of the more common buttercups across Europe and temperate Eurasia. Common names include meadow buttercup, tall buttercup, common buttercup and giant buttercup. Ranunculus acris is a herbaceous perennial plant that grows to a height of 30 - 70 cm, with ungrooved flowing stems bearing glossy yellow flowers about 25 mm across. There are five overlapping petals borne above five green sepals that soon turn yellow as the flower matures. It has numerous stamens inserted below the ovary. The leaves are compound, with three lobed leaflets. Unlike Ranunculus repens, the terminal leaflet is sessile. As with other members of the genus, the numerous seeds are borne as achenes. This and other buttercups contain ranunculin, which breaks down to the toxin protoanemonin, a chemical that can cause dermatitis and vomiting. The plant is an introduced species across much of the world. It is a naturalized species and often a weed in parts of North America, but it is probably native in Alaska and Greenland. In New Zealand it is a serious pasture weed costing the dairy industry hundreds of millions of dollars. It has become one of the few pasture weeds that has developed a resistance to herbicides. The rare autumn buttercup (R. aestivalis) is sometimes treated as a variety of this species.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum:
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Class: Magnoliopsida
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Order: Ranunculales
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Family: Ranunculaceae
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Genus: Ranunculus
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