Nyctanthes is a genus of flowering plants in the family Oleaceae, native to southeastern Asia. It is currently accepted as containing two species; other species previously included in this genus have been transferred to other genera, most of them to Jasminum.Kew World Checklist of Selected Plant FamiliesUniversity of Oxford, Oleaceae information site: NyctanthesSarmah, K.K. & Borthakur, S.K. (2009). A checklist of angiospermic plants of Manas national park in Assam, India. Pleione 3: 190-200.
They are shrubs or small trees growing to 10 m tall, with flaky bark. The leaves are opposite, simple. The flowers are produced in small clusters of two to seven together. The fruit is a two-parted capsule, with a single seed in each part.Flora of Pakistan: NyctanthesAgroForestry Tree Database: Nyctanthes The name Nyctanthes means "night flowering".
Species Nyctanthes aculeata Craib – Thailand Nyctanthes arbor-tristis L. - (Night-flowering jasmine or "sad tree") native to Bangladesh, India, Nepal, Bhutan, Assam, Arunachal Pradesh, Java, Sri Lanka and Sumatra.
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