Jacobaea aquatica

Jacobaea aquatica

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Jacobaea aquatica in bloom

Jacobaea aquatica, commonly known as marsh ragwort, is a species of flowering plant in the family Asteraceae. It is native to Europe and is typically found in wetland areas such as marshes, fens, and damp meadows.

Description

Jacobaea aquatica is a perennial herbaceous plant that can grow up to 1 meter in height. The stems are erect, hollow, and often tinged with purple. The leaves are pinnately lobed, with the lower leaves being larger and more deeply divided than the upper ones.

The plant produces bright yellow flower heads, which are composed of both ray florets and disc florets. The flowering period is from June to September. The fruit is a cypsela, which is a type of achene typical of the Asteraceae family.

Habitat and Distribution

Jacobaea aquatica is commonly found in wetland habitats across Europe. It thrives in moist, nutrient-rich soils and is often seen in marshes, along riverbanks, and in damp grasslands. The plant is well adapted to waterlogged conditions and can tolerate periodic flooding.

Ecology

Jacobaea aquatica plays a role in wetland ecosystems by providing habitat and food for various insect species. The flowers attract a range of pollinators, including bees, butterflies, and hoverflies. The plant is also a host for certain caterpillar species.

Toxicity

Like many members of the genus Jacobaea, Jacobaea aquatica contains pyrrolizidine alkaloids, which are toxic to livestock and humans if ingested in large quantities. These compounds can cause liver damage and other health issues. Therefore, it is important to manage the presence of this plant in grazing areas.

Related pages

• Asteraceae
• Wetland
• Pollination
• Pyrrolizidine alkaloid