Akondo or Crown flower (Calotropis gigantea, family: Apocynaceae) is a perennial shrub with branches and milky latex, attaining a height of 5 m. Bark is grey. The stem is slightly wooody and much branched at the base. Some plants have been found whose trunks are quite hard and woody and those look like small-sized trees.
Common names: Akkan, Madar.
Young shoots and lower part of leaves are tomentose. The plant is an iconic one in the rural areas in Bangladesh. It is found in several countries in South and Southeast Asia, including the Indian subcontinent, China, Malaysia, Myanmar, and Thailand.
Branches and leaves emit milk when snapped. Leaves are whitish green, leathery, short-petioled or sessile, broadly ovate, 10-20 cm long and 6-12 cm wide, tip slightly pointed.
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The fruit is ovoid, curved, 6-8 cm long and 3-5 cm wide, tomentose, dehiscent, yields cotton; borne usually in a pair.
It grows on fallow lands all over Bangladesh. Propagation of the plant is caused by seeds and cuttings.
It is used in cough, cold, asthma and insect poisoning. A fine fibre is obtained from its stem. Cotton from the seeds is used to make pillows. Fresh leaves are used in rheumatic pains. The extract of roots is used as a a tonic. Laxative is made from its milky latex and is used in leprosy. Roots are used to make toothbrush and to cure toothache.
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