| Frankincense is used in perfumery and aromatherapy. Olibanum essential oil is obtained by steam distillation of the dry resin.Frankincense is tapped from the very scraggly but hardy Boswellia tree through slashing the bark and allowing the exuded resins to bleed out and harden.Obtained from the leafy forest tree Boswellia Thurifera, with leaves deciduous, alternate towards the tops of branches, unequally pinnated; leaflets in about ten pairs with an odd one opposite, oblong, obtuse, serrated, pubescent, sometimes alternate; petioles short. Flowers, white or pale rose on short pedicels in single axillary racemes shorter than the leaves. Calyx, small five-toothed, persistent; corolla with five obovate-oblong, very patent petals, acute at the base, inserted under the margin of the disk, acstivation slightly imbricative. Stamens, ten, inserted under the disk, alternately shorter; filaments subulate, persistent. Anthers, caducous, oblong. Torus a cup-shaped disk, fleshy, larger than calyx, crenulated margin. Ovary, oblong, sessile. Style, one caducous, the length of the stamens; stigma capitate, three-lobed. Fruit capsular, three-angled three-celled, three-valved, septicidal, valves hard. Seeds, solitary in each cell surrounded by a broad membranaceous wing. Cotyledons intricately folded multifid.
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