Family 

 Pinaceae 



Compo sitae 



Gramineae 



\ «* 6 *■ 



TABLE II. 

 Occurrence of Organic Acids in Higher Plants 



Ablatio Acid 



HOOC 



V 



CHr 



CH3 ! j 



Genus an d Species 



Pinus abies 



P. l&rix 



P. palustris 



Aconitic Acid 



COOH 

 t 



C = CH COOH 

 t 



CH 2 COOH 



Chenopodiaceae Beta vulgaris 



Achillea millefolium 



Helianthus annuus 



A vena sativa 



Hordeum vulgare 

 ii ti 



Saccharum officinarum 

 Secale cereale 



CH(CH 3 ) 2 



Source 

 Colophony 

 Resin 



Resin 



Reference 



37, 117, 166, 



173 

 U8, 1422 



-,35a, 265a, 31^ 



Juice 



396, 



399 



Unripe beet 



713 

 291 

 58 

 l|83 





Etiolated C " 

 shoot 



172 





Seedling 



320, 



i-83 



Juice 10,36,50,i4l5*609,6lO, 



611, 702, 707, 711, 79k' 

 821, 827. 



