Cassia javanica
Cassia javanica, also known as Java cassia, pink shower, apple blossom tree and rainbow shower tree (; Filipino: balayong), is a species of tree in the family Fabaceae. 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. Description. "Cassia javanica" is a fast growing, deciduous / semi-deciduous tree which flowers in spring and sheds its leaves in the winter months. It has a straight trunk that reaches heights of 25 - 40m. The leaves are paripinnate with 12 pairs  of elliptical leaves. The flowers range in colour from pale pink to crimson with yellow coloured stamens and are found in open clusters. The ground under the tree is covered with a beautiful carpet of pink towards the end of the flowering season. The fruit are housed in long cylindrical dark brown pods. Because of its beauty and suitable size "C. javanica" is planted as a shade and ornamental tree on streets and in parks. "C. javanica" is polymorphic and several sub species such as those listed below exist. Range. "Cassia javanica" originated in Java and Sumatra. Native range of  this species is China, Cambodia, Indonesia, Thailand, Malaysia, Myanmar, Mauritius, the Philippines, United States and Pacific Islands. Today it is also commonly found in other places including India and the Philippines. Flowering season. In India, "C. javanica" flowers in April/May and fruits and sheds its leaves in December. In Thailand, "C. javanica" flowers between Feb and April. In the Philippines, "C. nodosa" or "C. javanica nodosa" flowers between February until the summer season. In East Java, "C. javanica" flowers between October and December and fruits in the dry season. Cultural importance. "Cassia javanica" is one of Thailand's Nine  Auspicious Trees and is said to bring good luck, ensure continued high rank and afford victory. Its flower is the provincial flower of Chainat Province, Thailand. The subspecies native to the Philippines, locally called "balayong", is honored through the Balayong Festival in Puerto Princesa, Palawan. The flower is a historical symbol of feminine dominance, female beauty, and love in the language of herbs among the locals. Uses. It is used medicinally as a substitute to "Cassia fistula" for treating constipation, colic, chlorosis and urinary disorders. Its leaves are effective against herpes simplex and the bark of "C. javanica" is one  of the ingredients in ayurvedic and other traditional medicine antidiabetic formulations. "C. javanica" yields a lightweight to heavy hardwood that is used for general construction, furniture and cabinet making. The bark of "C. javanica" is used for tanning in the leather processing industry.