DOG-ROSE — DRAGON'S BLOOD — DWARF ELDER. 55 



DOG-ROSE. Rosa Canina. 



Synonym — Wild Brier, Hip Tree, Cynosbata. 



Part used — Ripe Fruit. 



Use — A conserve made from the ripe fresh fruit, has 

 been official. It made an excellent material for forming 

 pillmasses. Now it is seldom used. 



Preparation — Confectio Rosa Caninae, B.P. 1885. 



DRAGON'S BLOOD. Calamus Draco. 



Synonym — Daemonorops Draco. 



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. 



DYER'S GREENWEED. Genista tinctoria. 



Synonym — Greenweed, Dyer's Weed, Dyer's Broom, 

 Wood- waxen. 



Part used — Twigs, leaves. 



Action — Diuretic, cathartic, emetic. This plant has 

 been successfully used as a remedy in dropsical affec- 

 tions, also in gout, rheumatism, and in albuminaria. 

 The decoction may be given in wineglassful doses 3-4 

 times daily. 



DWARF ELDER. Sambucus ebulus. 



Synonym — Danewort. 



Part used — Leaves. 



Action — Expectorant, diuretic, diaphoretic, purga- 

 tive. It is said to be very efficacious in dropsy. The 

 berries are sometimes used medicinally. 



