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Boswellia sacra Flueck. - Burseraceae - frankincense, olibanum-tree, Somalischer Weihrauch, Arabischer Weihrauch

Small tree, 2-8m high, native to northeastern Africa (Somalia) and the Arabian Peninsula (Oman, Yemen); bark papery, peeling; leaves clustered at the ends of tangled branches; flowers are borne in axillary racemes up to 10 cm long, with yellow-white petals. „Trees are normally multi-stemmed, but can also have a single trunk. All parts of the tree are highly resinous… The trees cling to boulders or rock-faces by means of a cushion-like swelling at the base of the trunk. This swollen base helps to stabilise the tree and is most developed in those growing on very steep or exposed rocks…In Oman the tree is so heavily browsed by herbivores that it rarely flowers or sets seed, apparently leading to poor regeneration and the death of some trees.“ http://www.kew.org/science-conservation/plants-fungi/boswellia-sacra-frankincense

„It is the primary tree in the genus Boswellia from which frankincense, a resinous dried sap, is harvested.“
http://en.wikipedia.org/wiki/Boswellia_sacra

„Boswellia carteri and Boswellia sacra olibanum have quite similar chemical composition, with isoincensole acetate as the main diterpenic biomarker.“
[A chemical investigation by headspace SPME and GC-MS of volatile and semi-volatile terpenes in various olibanum samples. Hamm, S., Bleton, J., Connan, J., & Tchapla, A., Phytochemistry, Vol.66(12), 2005, 1499-1514]

„Burning of Boswellia resin as incense has been part of religious and cultural ceremonies formillennia and is believed to contribute to the spiritual exaltation associated with such events. Transient receptor potential vanilloid (TRPV) 3 is an ion channel implicated in the perception of warmth in the skin. TRPV3 mRNA has also been found in neurons through-out the brain; however, the role of TRPV3 channels there remains unknown. Here we show that incensole acetate (IA), a Boswellia resin constituent, is a potent TRPV3 agonist that causes anxiolytic-like and antidepressive-like behavioral effects in wild-type (WT) mice with concomitant changes in c-Fos activation in the brain.“
[Incensole acetate, an incense component, elicits psychoactivity by activating TRPV3 channels in the brain. Moussaieff, A., et al., The FASEB Journal, Vol.22(8), 2008, 3024-3034]