202 POLYGONE.E. 



Properties. Abounding with volatile oils, which 

 render them stimulant and carminative. 



Officinal Plants. 



Lavandula spica. 

 Marrubium vulgare. 

 Mentha piperita. 



viridis. 



pulegium. 



Origanum vulgare. 

 Rosmarina officinalis. 



Monochlamydea. 

 39. POLYGONE.E. 



Perianth single, inferior, imbricate in aestivation. 

 Stamens definite, placed upon the bottom of the perianth, 

 v/ith their anthers longitudinally dehiscent. Ovarium 

 superior, one- celled, with a solitary erect ovule ; styles 

 or stigmas several. Seed with farinaceous albumen 

 rarely wanting or fleshy; embryo inverted, with the 

 radicle away from the hilum. 



Herbaceous, rarely shrubby, with simple alternate 

 leaves, and provided with ochreate stipules. 



Geographical .Relations. -General over the world, 

 from the North Pole to the West Indies. 



Properties. Astringent, acidulous, and cathartic. 



Officinal Plants. 



Polygonum bistorta. 

 Rheum palmatum. 

 Rheum undulatum. 



