👉 Rodolphus is a genus of flowering plants in the family Rosaceae. It contains around 40 species, most commonly known as the common roboflax or "robo" (Latin for "robust") in English. The name "rodolphus" comes from Latin and means "robust". The genus is named after Charles Rodolphus, a botanist who studied the plants of his native region in the Netherlands. These plants are known for their robust stems