Lepidium oleraceum, commonly known as Cook's Scurvy Grass, is a species of flowering plant in the Brassicaceae family. This plant holds historical significance, particularly in relation to maritime exploration and the prevention of scurvy. Its scientific name, Lepidium, derives from the Greek word 'lepis,' meaning scale, referring to the shape of its seed pods, while oleraceum is Latin for 'herby' or 'vegetable,' alluding to its edible nature. Cook's Scurvy Grass is a low-growing, herbaceous perennial or biennial that typically forms a rosette of basal leaves from which one or more flowering stems arise. These stems can reach heights of up to 50 centimeters, though they are often shorter. The leaves are highly variable, with basal leaves often being pinnately lobed or divided, while the stem leaves are typically smaller and lanceolate or linear. The plant produces small, white, four-petaled flowers arranged in terminal racemes. These flowers bloom during the spring and summer months. Following flowering, the plant develops small, ovate to obcordate silicles (a type of fruit characteristic of the Brassicaceae family) which contain two seeds. The plant has a taproot system. The native distribution of Lepidium oleraceum is primarily along the coastlines of New Zealand, where it is found in maritime environments. It thrives in salt-sprayed areas, often on coastal cliffs, rocky shores, and sandy beaches, indicating a high tolerance for saline conditions and exposure to wind. Cultivation requirements for this species are not widely documented, but its natural habitat suggests a need for well-drained soil, full sun, and tolerance to coastal conditions. Historically, Lepidium oleraceum gained prominence due to its high vitamin C content, which made it a valuable food source for sailors on long voyages. Captain James Cook and his crew are credited with utilizing this plant to prevent and treat scurvy, a debilitating disease caused by vitamin C deficiency. The leaves and stems are edible and have a peppery, slightly bitter taste, similar to watercress. While its culinary use is limited today, it remains an interesting example of a plant with significant historical nutritional value. Ecologically, it plays a role in coastal plant communities, contributing to the biodiversity of these specialized habitats. Its ability to colonize harsh, exposed coastal environments highlights its remarkable adaptations to salinity and nutrient-poor soils.