DE CANDOLLE'S SYSTEM. 



USES. Unknown. 



TYPICAL GENERA. Nemophila, Phacelia. 



117. Orobanchaceee. Parasitical brown leafless herbs. 

 Calyx permanent. Corolla irregular. Stamens didynamous. 

 Ovary 1 -celled, in a fleshy disk, with 2 or more parietal pla- 

 centse ; stigma 2-lobed. Fruit capsular, many-seeded, en- 

 closed within the withered permanent corolla ; seeds very 

 minute ; embryo extremely small, in the apex of albumen. 



USES. Scarcely known ; they are astringent plants. 



TYPICAL GENERA. Orobanche, Lathraa. 



118. Scrophulariacea. Herbs or shrubs with opposite or 

 alternate exstipulate leaves. Calyx tubular, permanent. Co- 

 rolla irregular. Stamens didynamous, or 2. Ovary 2-celled; 

 ovules numerous ; stigma 2-lobed. Fruit 2-celled ; seeds in- 

 definite or definite, albuminous. 



USES. Foxglove, whose action upon the pulse is so lower- 

 ing, is Digitalis purpurea. Gratiola officinalis, some Calceo- 

 larias, and others, are purgative and emetic. Euphrasia 

 officinalis is bitter and sub-aromatic. Vandellia diffusa is a 

 powerful antibilious emetic and febrifuge. 



TYPICAL GENERA. Scrophularia, Antirrhinum, Pentstemon. 



Digitalis purpurea. I. A corolla split open. 2. A pistil. 3. A transverse sec- 

 tion ot it. 4. A ripe capsule. 5. A vertical section of a seed. 



