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Cassia javanica, also known as Java Cassia, Pink Shower, Apple Blossom Tree and Rainbow Shower Tree (Thai: ชัยพฤกษ์), is a species of tree in the Fabaceae family. Its origin is in Southeast Asia, but it has been extensively grown in tropical areas worldwide as a garden tree owing to its beautiful crimson and pink flower bunches.
- Cassia javanica ssp. javanica (= C. bacillus Roxb., C. fistula sensu Blanco)
- Cassia javanica ssp. agnes (de Wit) K. Larsen
- Cassia javanica ssp. nodosa Buch.-Ham. ex Roxb.) K. Larsen & S. S. Larsen
- Cassia javanica ssp. renigera (Wall. ex Benth.) K. Larsen