Nyctanthes arbor-tristis, commonly known as the night-flowering jasmine or parijat, is a flowering plant native to South Asia. It belongs to the family Oleaceae and is known for its fragrant white flowers that bloom at night. The plant can grow as a small tree or shrub and typically reaches heights of 3 to 10 meters. The flowers of Nyctanthes arbor-tristis are small, tubular, and have a distinctive orange center. They are often used in traditional medicine and are associated with various cultural practices in countries like India and Nepal. The plant is also valued for its ornamental beauty and pleasant fragrance.