Euphorbia corsica, commonly known as Euphorbe de Corse, is a perennial herbaceous plant belonging to the diverse genus Euphorbia. This species is endemic to the island of Corsica, where it plays a role in its native Mediterranean scrubland ecosystems. Its significance lies in its unique adaptations to the often harsh, rocky, and arid conditions of its natural environment. Physically, Euphorbia corsica typically forms a dense, bushy clump, reaching a height of approximately 30 to 60 centimeters. The stems are erect to ascending, often branching from the base, and are characterized by a smooth, glaucous surface, giving them a bluish-green appearance. The leaves are arranged alternately along the stems and are generally lanceolate to oblong in shape, measuring about 3 to 7 centimeters in length. They are typically sessile or subsessile, meaning they have very short or no leaf stalks. The margins of the leaves are entire, or smooth. The most striking feature of Euphorbia corsica, like other members of the genus, is its inflorescence, which is a cyathium. Each cyathium is a cup-shaped involucre that surrounds a cluster of small, inconspicuous flowers. In Euphorbia corsica, these cyathia are borne in terminal, often compound, cymes. The involucre typically has prominent, often horn-shaped, appendages at its rim, which are usually yellowish or greenish. The true flowers within the cyathium are unisexual and reduced, with the male flowers consisting of a single stamen and the female flower of a single pistil. Following pollination, the plant produces a capsule, which is typically smooth and trilobed, containing the seeds. The milky white latex sap, characteristic of the genus Euphorbia, is present in all parts of the plant and can be an irritant. The native distribution of Euphorbia corsica is restricted to the island of Corsica, in the Mediterranean Sea. It thrives in a variety of habitats, commonly found in garrigue, maquis, rocky slopes, and open woodlands, often on calcareous or granitic soils. It prefers well-drained conditions and full sun exposure. Cultivation requirements mirror its natural habitat; it is best grown in well-drained soil, such as a sandy or gravelly mix, and requires ample sunlight. It is relatively drought-tolerant once established, making it suitable for xeriscaping or rock gardens. Its hardiness is generally moderate, and it may benefit from some winter protection in colder climates, though it is typically considered hardy in Mediterranean and similar temperate regions. While Euphorbia corsica is not widely cultivated for specific economic or medicinal purposes, its ornamental value is recognized in suitable garden settings. Its architectural form and glaucous foliage provide visual interest. Ecologically, it contributes to the biodiversity of its native Mediterranean habitats, providing a food source or habitat for local fauna. As with many Euphorbia species, the latex sap can be a defense mechanism against herbivores. The plant's ability to thrive in arid, exposed conditions highlights its adaptations to water conservation and heat tolerance.