94 DOG-ROSE DRAGON S BLOOD. 



Distinctive character Stem thread-like, curled 

 and twisted, without leaves, but with small globular 

 clusters of flowers, about - inch in diameter at inter- 

 vals. Taste, saline and slightly acrid. Odour, none. 



DOG-ROSE. Rosacanina, Linn. 



N.O. Rosacece. 

 Syn. Wild Brier, Hip Tree, Cynosbatos. 



Part used Ripe fruit. 



Use A conserve made from the ripe fresh fruit has 

 been official. It makes an excellent material for forming 

 pillmasses. Now it is seldom used. 



Preparation Confectio Rosa Caninae B.P., 1885. 



Distinctive character Fruits oval, fleshy, hollow, 

 scarlet when fresh, blackish when dried, with remains 

 of the calyx teeth at the apex, seeds angular, whitish, 

 densely covered with hairs. Taste of fruit, sweetish 

 and acidulous. 



DRAGON'S BLOOD. Calamus Draco, Willd. 



N.O. Palmacece. 

 Syn. Daemonorops Draco, Blume. 



Part Used Resin. 



Action Astringent, colouring. Its principal use is 

 for colouring purposes in tooth powders, tinctures, 

 plasters, &c. Also for colouring in varnishes and wood 

 stains, &c. 



Distinctive character In lumps of a blackish red 

 colour, or bright red where bruised or scraped, contain- 

 ing particles of the fruit scales. Taste, slightly acrid 

 and sweetish. When heated it gives off irritating 

 fumes of benzoic acid. About 70 per cent, soluble in 

 spirits of wine, but it is only very sparingly in turpentine, 

 and not in water. 



