👉 Ptilagrostiella is a genus of flowering plants in the family Apocynaceae, which belong to the order Caryophyllales. These plants are native to Europe and Asia, particularly to regions where cold temperatures and low humidity occur. Some species have been introduced into North America, including the species "Ptilagrostiella hirsuta", which is known for its large flowers and its ability to produce a rich fragrance during blooming season.