GRAVEL ROOT GRINDELIA. 121 



Action Diuretic, sedative. Recommended internally 

 for aches in joints, gouty and sciatic pains. Also used 

 externally as a fomentation. 



Distinctive character Leaves with long stalks, 

 divided once or twice into three-stalked leaflets, which are 

 about 2 inches long and about i broad, have unequal 

 sides, are acutely pointed, and are twice serrate at the 

 margin ; the veins are at an acute angle and prominent 

 beneath. Leafstalks channelled above, and keeled 

 beneath. Root creeping. Taste, saline. Odour, none. 



GRAVEL ROOT. Eupatorium purpureum, Linn. 



N.O. Composite, 

 Syn. Gravelweed, Queen of the Meadow Root. 



Part used Root. 



Action Diuretic, stimulant, tonic. Used principally 

 in the treatment of gravel, stone in the bladder and 

 affections of the kidneys and urinary organs. It is also 

 a nervine tonic. 



Preparation Fluid extract : Dose, ^-i drachm. 



Distinctive character Rhizome -1 inch in dia- 

 meter, very hard and tough, with a thin greyish brown 

 bark and thick whitish wood, not visibly porous, often 

 hollow in the centre, and with wide medullary rays. 

 The rhizome has short lateral branches, all furnished 

 with crowded, tough woody roots, about t^ inch in dia- 

 meter, and several inches long. Taste, bitter, astringent, 

 and slightly acrid. 



GRINDELIA. Grindelia camporum, Greene. 



and O. squarrosa, Dunal. 

 N.O. Composite. 



Syn. Grindelia robusta, Nutt., Gum Plant, Hardy 

 Grindelia, Scaly Grindelia. 



Part used Herb. 



Action Ant-asthmatic, diuretic, tonic. Very largely 

 employed in America in the treatment of asthmatic and 



