Lal shonail or Pink shower (Cassia javanica, family: Fabaceae) is a medium-sized deciduous tree with knotted and shortened trunk, attaining a height of 12-16 m. Bark is grey. Young shoots are silky. Its spreading branches sometimes almost touch the ground towards the peripherry. It is an ideal tree for planting in a large garden.
It is found in the hilly forests of Sylhet and Chottogram in Bangladesh. As a beautiful ornamental tree, it is planted in parks, botanical gardens, gardens and roadsides in the country. It is also found in various tropical countries of Asia.
At the beginning of summer, the canopy of the tree is covered with flowers in such a way that it looks as if a pink fountain is waiting to fall. In order to get colorful colors in summer, you have to plant this tree in the garden with Jarul, Krishnochura, Shonalu and Konokchura.
Leaves are spectacular. These are compound, 12-24; leaflets elliptic-oblong, 2.5-4.5 cm ang 2-3.5 cm wide.
Flowers are scented, pink or reddish, 2 cm across, on corymb inflorescence rising from the nodes. Sepals 5, petals 5. Flower profusely blooms in March-April. Although not abundant in numbers, blooming continues in the middle of the rainy season.
Fruit is vey long, 30-60 cm, 2-2.5 cm wide, cylindical, many seeded, brown in color, quite a resemblance to the fruit of Shonalu. The plant is propagated by seeds.
In Ayurveda it is used in diabetes. It is also used in constipation and urinary diseases.