754 



MANUAL OF POISONOUS PLANTS 



F'ii?. 4393. Illustrating structure of Compositae. Thistle 

 (^Cirsuim altissimum). 1, head; 2, leaf; 3, outer bracts of hcail; 

 4, inner bracts; S, single flower; a, achene; b, pappus; c, tubu- 

 lar corolla with 5 lobes; d, anthers; c, style. 6, style enlarged 

 with two stigmas and pollen grains on style; 7, syngenesious 

 anthers cut lengthwise to show pollen grains and tailed appen- , 

 dages; 8, single pollen grain. (Charlotte M. King). 



the Inula Heleniiim, native to Europe and occasionally naturalized in the north- 

 ern states. It is a mild tonic and contains inulin C^^Hj^p., hclcnin and a volatile 

 oil. The pellitory root {Anacyclus Pyrcthrum) contains pyrcthrin with a pungent 

 taste, which, according to Dunstan, is apparently identical with pipcrovatin Q^^ 

 H,jNO.,. used for toothache; the flowers of Roman chamomile (Aitthetnis 

 nobilis) are used as a tonic and stomachic. However, German chamomile 

 (Matricaria CInimomilla) is sometimes substituted for the preceding and con- 

 tains anlhemidin and a deep-blue volatile oil. Santonica, a species of worm- 

 wood, Artemisia Ciiia, contains santonin C,-H,„0„, and cinerol C.-H,,©.. is 



^ 10103 lUiSO 



