DIV. n 



ANGIOSPERMAE 



655 



Family 7. Burseraceae. Woody plants with resin passages. Commiphora 

 abyssinica and C. Sehimperi are trees found in Arabian East Africa. Boswellia 

 Carteri and B. Bhau Dajianae are 'small trees from the 

 same region which yield OLIBANUM. Canarium. 



OFFICIAL. MYRRHA, Myrrh, from Balsamodendron 

 Myrrha and other species. 



Family 8. Polygalaceae. K5, C3, A (8), G(2). The 

 two lateral sepals are petaloid. Three petals, the lowest 

 of which forms a keel. Stamens 8, coherent into a tube 

 (Figs. 680-682). Polyyala chamaebuxus is a small shrubby 

 plant occurring in the Alps. P. vulyaris and P. amara 

 occur in Britain. 



OFFICIAL. Polygala Senega (North America) yields 



SENEGAE RADIX. 



* 



Order 16. Sapindinae 



This includes the following families : 

 Family 1. Sapindaceae. Tropical. The crushed seeds 

 of Paullinia cupana, a liane of Brazil, yield GUARANA. 



Fio. 680. Floral diagram of Polygala myrtifolia. (After EICHLER. ) 



FIG. 681. Polygala Senega. A, Flower ; a, small ; 6, large sepals ; 

 c, keel ; e, lateral petals ; d, androecium. B, Androecium ; h, anthers 

 (magnified). (After BERG and SCHMIDT.) OFFICIAL. 



FIG. 682. Polygala Senega. 

 (nat. size.) OFFICIAL. 



Family 2. Anacardiaceae. Mostly tropical. Mangifera indica ; Rhus toxico- 

 dendron Pistacia. 



Family 3. Aquifoliaceae. Ilex aquifolium. The Holly, an evergreen shrub or 

 tree of Western Europe (Fig. 683). 7. paraguariensis yields Paraguay Tea or Mate. 



