Flora of Bangladesh

Kathali-chapa or Climbing lang lang ( Artabotrys hexapetalus,  family : Annonaceae) is a bushy shrub, native to South and Southeast Asia. Its stem is woody. Immatured flowers are whitish green, matured are deep yellow in color; petals 6, leathery, open. Calyx is curved, like a hook.  Leaves are alternate, shiny green, oblong-lanceolate, 5-14 cm long, 2-5 cm wide. Propagation is caused by cutting and seed. Group of fruits (usually 6) grow together at the end of long peduncle. Fruits are ovoid, smooth, pointed at the end, 2.5-4 cm long. Flowers are well scented. They scented like ripe Jackfruit. In Bangla, the flower is named after this reason.  Flower blooms from summer to rainy season. 

Telshur or White thingan  ( Hopea odorata , family: Dipterocarpaceae) is a large semi-deciduous tree with straight trumk, usually 25-30 m high.  Telshur  is a good timber tree of forest, found in Chittagong, Chittagong Hill Tracts and Sylhet.  The tree is native to South and Southeast Asia. Flowers are small, fragrant, greyish white on terminal uniperous raceme.  Leaves are oblong-lanceolate with heavy and undulated margin on weak stalk; 7-10 cm long and 3-4 cm wide. This beautiful vigorous tree has been everywhere in Bangladesh along the roadside as a shade tree.  Fruit is nut, two-winged, 4 cm long.  The tree is important for timber, suitable for building construction. Its bark exudes tannin, which can be used for tanning leathers. Resin can be extracted from the tree.