Scientific name: Schleichera oleosa. Name in different languages:- English: Ceylon Oak, Honey tree, Lac tree, Gum lac tree, Ma tree, Macassar Oil Tree. Hindi: Kusumb कुसुम्ब, Kusam, Kusum कुसुम. Gujarati: Kusum કુસુમ, Kosumb કોસુમ્બ. Telugu: Posku. Tamil: Kumbadiri. Malayalam: Poovam, Puvam, Poovanam, Puvathi, Dhoothalam, Doodalam.
Schleichera oleosa (Ceylon oak) is a medicinal tree that grows in mountains and valleys in abundance. The gum or lac that is extracted from the tree is very costly. Ceylon oak belongs to the family Sapindaceae and is known binomially as Schleichera oleosa. Schleichera oleosa (ceylon oak) is used for medicine against skin diseases like leprosy and also for biliousness and phlegm. The oil from it is used to cure muscle pain related to old age and rheumatism that affects the knee and also cure the inflammation of the affected area that occurs in rheumatism. The medicinal value of the oil of schleichera oleosa (ceylon oak) is the presence of elements like stigmasterol, sitosterol and campesterol. The fruits of ceylon oak are used as a condiment in certain countries as it helps in digestion.
The schleichera oleosa (ceylon oak) tree or puuvam is found in plenty in the ghat regions. The fruits and bark have medicinal properties. It grows up to 30 meters high. They shed leaves in certain months of the year. The flowers are light yellow in colour. The seeds are round and soft in texture and are seen 1 or 2 in a fruit. The endosperm in the seed is the ingredient in Ceylon oak oil. Seeds are separated from the mature fruit and dried and used for propagation. The pulp of the fruit should be removed before drying. The dried seeds are germinated in polythene covers filled with mud mixture. When the sapling turns 4 leaf stage, They can be replanted accordingly. If the soil is not so fertile, animal manure should be added. Schleichera oleosa (ceylon oak) is resistant against diseases, except for attack of certain mites. Since schleichera oleosa (ceylon oak) is medicinal tree no chemical fertilizer or insecticide should be used.