Catharanthus roseus (Nayantara): A Comprehensive Botanical, Ecological, and Conservation Study Catharanthus roseus, commonly known as Nayantara, Madagascar Periwinkle, or Sadabahar, is a perennial herbaceous plant celebrated for its striking floral beauty and remarkable biological significance. Native to Madagascar but now naturalized across the tropical world, this species has transcended its ornamental value to become […]