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Petrosedum dianium (often classified as Sedum sediforme subsp. dianium) is a hardy, mat-forming succulent endemic to eastern Spain. Known locally as raïmet de pastor (pastor's grapes), it is traditionally harvested for culinary uses and is celebrated for its extreme drought resistance, distinctively flat leaves, and vibrant yellow flowers.
Key Facts & Characteristics
Botanical Classification: A member of the Crassulaceae family, its exact taxonomic rank is sometimes debated but widely recognized as a unique subspecies of pale stonecrop (Petrosedum sediforme).
Physical Traits: Distinguished from other stonecrops by its characteristically flat leaves (especially on the flowering stem) and its intense, star-shaped yellow flowers that typically bloom in the summer.
Habitat: Thrives in dry, well-draining, and rocky limestone outcrops, often growing wild in the mountains and coastal regions of the Valencian Community and beyond.
