Description

• Lysimachia arvensis, commonly known as scarlet pimpernel, red pimpernel, or blue-scarlet pimpernel, is a low-growing annual herb in the primrose family (Primulaceae). Its slender, branching stems bear opposite pairs of oval leaves with smooth margins and small dark glandular dots on the undersides. The flowers grow singly from the leaf axils and have five petals, most commonly bright orange-red or scarlet, although blue-flowered forms also occur. The flowers generally open in bright sunlight and close in dull weather. The fruit is a small, round capsule containing numerous tiny seeds.

Range

• Lysimachia arvensis is native to Europe, North Africa, and parts of western Asia. It has been introduced and naturalized in many regions worldwide, including parts of the Americas. It is established in Zihuatanejo, Guerrero, and the surrounding area.

Habitat

• It grows in open, sunny habitats, including grasslands, cultivated fields, gardens, roadsides, disturbed ground, and coastal areas. It favours relatively open sites with moist soil during the growing season but can tolerate drier conditions once established. Its small size and spreading growth habit allow it to grow among grasses and other low vegetation.