Nouvelle flore coloriée de poche des Alpes et des Pyrénées. Paris, Klincksieck, 1906-1912. alps, plants, Pyrenees., This illustration features the plant *Diplotaxis saxatilis*, commonly known as rock wall rocket. It showcases slender green stems topped with delicate yellow flowers, each having four petals arranged in a cross-like formation, characteristic of the crucifer family. The plant is depicted with its foliage, which consists of lobed leaves that grow close to the ground, emphasizing its habitat among rocky terrains. Below the botanical name, the text identifies its French title as 'Diplotaxis des rochers' and classifies it among the crucifers, reflecting its ecological niche and botanical lineage.