Krishnachura or Royal poinciana (Delonix regia, family: Fabaceae) is a large deciduous ornamental tree with spreading crownn. It is one of the most spectacular flowering trees in the tropicular world. When the blooming begins, a miraculous beauty is reflected throughout the tree.
Other names: Peacock flower tree, Flamboyant, Flame of the forest, Flame tree.
It is planted in gardens and parks and beside the roads and highways. In fact, it is planted everywhere in Bangladesh. Its original home is Madagascar. The tree is brought to the country from Mauritius in 1812, perhaps through Christian missionary. In India, it is called 'Gulmohar' (Golden seal).
Leaves are beautiful. Those are bipinnate, large, about 1 m long, pinnae 11-18 pairs, leaflets up to 20, tiny, 1 cm long.
Flower arise in broad erect clusters at the end of the leafless branches. Sepals 5, petals 5, orange-red in color, except the other one which bears yellow or white stripes. It blooms in the summer (April), sometimes flowering continuous up to July. A yellow variety (Delonix regia var. flavida) of this is also seen in Bangladesh.
Fruit is legume, very long 30-60 cm and 4-5 cm wide. It is flat, sometimes curved and twisted. Propagationis caused by seeds and cuttings.
The beautiful tree drops all the leaves in the winter and becomes absolutely bald. And this time the dried fruits can be seen hanging the tree.
Different parts of the plant is used in piles, tumour, vomiting, fever, urinary problem and irregular menstruation. Its flower, leaf and bark are purgative and stimulant.
The poets and writers of Bangladesh are fascinated by the beauty of its flowers. However, many of them mistakenly think that its flowers bloom in the spring.
Hijol or Indian oak ( Barringtonia acutangula , family: Lecythidaceae) is a medium-sized evergreen tree, native to riverine Bangladesh. This water-loving tree is found in the wetlands of Bangladesh. In rural areas, it can be seen standing in the water like Koronja . Common names: Hijal, Hijangal, Hendol. Leaves are short petioled, serrated, 7-12 cm long and 3-7 cm wide, crowded at the end of the branches. Flowers are small, pink to red, sub-sessile, purple red with numerous stamens. Inflorescence is 20-30 cm long, pendulous raceme, flower openning from top to downwards. The 4-merous flowers are grouped in long & pendulous racemes up to 20-30 cm long. The cup-shaped calyx is light green in color. Flowers bloom in April-May. In the winter Its bark has tannin which is useful for heart diseases. Powder of seeds works expectorant and applied to cure cough of children. Tonic is prepared from leaves and roots. Fish poison is also prepared from its roots
Guloncho or Heart-leaved moonseed ( Tinospora cordifolia , family: Menispermaceae) is a deciduous creeper with hard and long stem, climbing other trees or fences. Bark on the stem is as thin as paper. Aerial roots come out of the stem when the plant grows older. The plant is found everywhere in Bangladesh except southern part. It is also native to South and Southeast Asia. Common names: Heart-leaved moonseed, Guduchi, Giloy, Guloncho, Guroncho, Padma guloncho. Leaves are simple, green, alternate, cordate, 6-15 cm long and 5-13 cm wide. Inflorescence, growing from the axil of leaflet branches, bears yellow flowers. Male and female flowers bloom separately. Sepals 6, arranged in two rows, petal 6, pistils 3. Fruit is a drupe, brilliant red when ripe. This attractive fruit is inedible to human. What an extensive climber! Tinospora cordifolia is used in weakness, tastelessness, rheumatis
Kulekhara or Talmakhna ( Hygrophila auriculata , family: Acanthaceae) is a stout and erect herb with straight and undivided stem. The spiny plant is very popular as a medicinal plant in Bangladesh as well as the Indian subcontinent. Other names: Kulekkha, Kuiley-rekha, Kanta kalika, Shoolmordon. Leaves are lanceolate, subsessile, acute at both ends with long whitish hairs, dense with straight and stout thorns that grow from each node. Outer leaves are longer than the inner ones. Both leaves and thorns remain in upward direction. Flowers in axillary whorls. They are bright violet or bluish purple and red, sometimes whitish with soft and minor hair, corolla 2-lipped. Flower blooms in the winter. Fruit a capsule, 4-8-seeded. Seeds are ovoid (not in the pic). The body of the plant contains alkaloids, phytosterols, stigmasterol, lupeol and essential oils. Its seeds contain oil, enzymes and sterols. The plant is cooling and diuretic in cases of h