| + | Burseraceae (from the genus Bursera, named in memory of Joachim Burser, a botanist in Naples). Bursera Family. Fig. 31. Trees or shrubs, often very large, with usually alternate compound leaves: flowers bisexual, regular, usually small and very numerous; sepals 3-5, more or less connate, imbricated or often valvate; petals 3-5, usually separate, imbricated or valvate; stamens usually twice as many as the petals, hypogynous, sometimes unequal, separate, the outer opposite the petals; disk present, annular or cup-shaped, rarely 0, sometimes adnate to the calyx; ovary superior, 2-5-celled; ovules usually 2 in each cell; style 1 or 0: fruit drupe-like with 2-5 stones or with a bony endocarp or a capsule with the epicarp opening and exposing the connate bony pits; seeds exalbuminous. |
| + | The family is very rich in resin and, therefore, is of considerable economic importance. These resins are frequently aromatic or fragrant; hence many have been used as incense. The resin myrrh is obtained from species of Commiphora of Arabia and Africa. Mecca balsam is from the same genus. Olibanum incense is derived from trees of the genus Boswellia, of India. Frankincense is either this olibanum or the resin from Boswellia Carteri. A substitute for dammar and copal has been obtained from the Burseraceae. |