Kohomba-Azadirachat indica

Botanical name-Azadirachta indica A
English name-Neem.
Tamil name-Arulundi

Kohomba (Margosa) is an extremely handsome tree with a larg graceful crown. The leaves crowd at twig ends; ahe flowers are small and about ¾ inch in diameter , they are white and sometimes a very pale shade of violat,and they are sweet scented.

The Margosa tree is used a great deal in indigenous medicine . The powdered bark and fresh leaves are mentioned in the pharmacopoeia of India. According

To the old text on indigenous medicine , the presence of the tree is an insect repellent.

The twigs are used to clean teeth . The fresh of the leaves with solt and bees honey is given for intestinal worms. The juice is prescribed for jaundice and skin diseases. Externally, the leaves are applied for skin diseases as discutient or as an antiseptic. 
They are also used for boils, chronic ulcers, eruption due to small pox, glandular swelling, wound ets.they are used either as poultices , decoction, iiniment or ointment. A piece of cloth ,saturated with the decoction to whuch has been added a little sprits of camphor, is used as a bandage over compound fractures. 

The gum exudes from the stem is a stimulant has a soothing effect on the skin and mucus membranes, and is used in catarrhal diseases and general debility.

The seeds are also used as an insecticide and as a detergent for washing the hair. Their suspension is used as a spray. The astringent and antiseptic virtues of Margosa oil have been experimentally confirmed.

The flowers are dried and are used as a tonic for fever. A very effective food for diabetes is made out of Margosa flower. Kohamba trees were always planted in front of the house. The small that comes from the Nim tree is disinfectant and kills germs. It helps to purify the air. There for planting Kohamba trees where air pollution exists serve a dual purpose as shade trees, and as an anti-pollutantm. 

Wenivael gaeta-Coscinium fenestratum

 Scientific name-  Coscinium  fenestratum

English name- Cailumba wood

Tamil name-Maramanjal, Manjalkodi, Pasamantram, Imalam

The name "Baan vael" seems to be specific to Sinhala.It is woody climber with a smooth bark, young shoots densely and finely yellow-tomentose; leavsimple, alternate, exstipulate, large.This is a highly endangered species with a high commercial demand and hence should be a niche agricultural cash crop for an enterprising farmer.
Its chief use is a remedy against tetanus.It is the stem of this creeper used in Ayurvedic medicine.In Malaria and other fevers it is as valuable remedy as quinine.It is used as an infusion.
It is also used in the treatment of diarrhoea  in both adults and in fants.In jaudice and skin diseases , it is administered , the bitter alkaloid in Weniwal in the treatment of bleeding piles and in cases of excessive menstruation. It is a blood purifier.  

Mango-Mangifera indica

Botanical name- Mangifera indica
English name-Mango
Tamil name-Mangai

The mango tree as medicinal plant has a great many uses in Ayurveda .All the part of the tree are used medicinally. The tender leaves dried and powered are given for diarrhea  and diabetes. The smoke from burning leaves can be inhaled for the relief of hiccup and throat diseases. The ash is popular remedy burns and scalds. The midrib of the leaves is burnt and the ash used to remove warts on eyelids. It is an effective mouth-wash for toothache,so gums and sore throat.

The juice of the bark has a marked action on mucus membranes. It is given as a medicine to stop the discharge of mucus from the uterus, bowels and intestines. It is also used for the treatment of dysentery and bleeding piles. The juice of the fresh bark with the addition of the white of the egg and a little opium is given for these diseases.

The unripe fruit is sliced, mixed with salt and dried in the sun. the seed kernel of these is salted.  Mangoes are frequently used as an ingredient for a decoction for dysentery. The kernel of the mango seed is roasted and powdered and powdered and a teaspoon of this powder in cured is given to expectant mothers suffering from diarrhea.

There are many varieties of mangoes but Etamba is indigenous to Sri Lanka. The barks of the mango tree is frequently used  as an ingredient in medicine for the treatment of orthopaedic complaints.