description
Boswellia serrata is a moderate to large sized branching tree of family
Burseraceae. It is a moderate-sized to large, deciduous tree with a light,
spreading crown and somewhat drooping branches. It usually has a short bole,
3-5 m in height, sometimes can be more taller, if grown in a fully stocked
forest. Ordinarily, it attains a girth of 1.2-1.8 m and a height of 9-15 m.
Bark is very thin, grayish-green, ashy or reddish in color with a
chlorophyll layer beneath the thin outer layer, which peels off in thin,
papery flakes.
Leaves are alternate, exstipulate, imparipinnate, 20-45 cm in length, crowded
towards the ends of the branches; leaflets 17-31 cm, opposite, 2.5-8 cm x
0.8-1.5 cm, basal pairs often smallest, sessile, lanceolate or ovate-lanceolate,
crenate, very variable in size. Flowers are white, born in stout racemes 10-20
cm long, shorter than the leaves, crowded towards the ends of branches, but not
terminal. Calyx persistent, pubescent outside, 5 to 7-toothed; teeth small,
deltoid. Petals 5-7, erect, free, 0.5 cm long. Fruits 1.3 cm long, trigonous,
with three valves and three heart shaped, 1-seeded pyrenes, winged, along the
margins.
Oleo gum-resin is tapped from an incision made on the trunk of the
tree. The bark yields gum of acceptable quality after 8 years. A mature tree
yields about 1-1.5 kg of gum a year.
common names & nomenclature
The generic name Boswellia is given after Dr. James Boswell of Edinbergh
Botanical Garden and friend of William Roxburgh, Director of Indian
Botanical Garden, Calcutta. The specific name, serrata, comes from serra (a
saw) referring to the toothed leaf margins.
Also known as:
indian frankincense tree, indian olibanum, kundur, salai guggal,guggul, salakhi, and in sanskrit, shallaki, boswellin