- 136 



APPENDIX I 



Flowering Plants Whose Lea-yes Yielded the Pigments Illustrated by 

 Figure II, lo 



(The natural habitat is recor'ded as well as the location, in paren- 

 theses, of the speciments examinedo Variations of the pigment system, 

 particularly the presence or absence of CX-carotene, are noted in the 

 tabulationc Traces of taraxanthin were fo\ind in the Cycadaceae), 



SPERMATOPHYTA 



GYMNOSPERMAE 



ARAUCARIACEAE 



Agathis robusta , Queensland Kauri, Austrailia (Oahu) (much 



CX-carotene) 



Arauoaria excelsa , Norfolk-Island-Pine, Norfolk Island and 



Australia (Oahu) (much ©(-carotene) 



Araucaria imbricata . Monkey Puzzle Tree, Chile, (Burlingame) 



(some CK-carotene) 



CUPRESSACEAE 



Cupressus macrocarpa , Monterey Cypress, California Coast 



(Stanford) (some ©(-carotene) 



Cupressus sempervirens, Italian Cypress, Southern Europe 



(Stanford) (some 0(=carotene) 



Libocedrus decurrens. Incense Cedar, California (Stanford) 



(much CX=carotene) 



Thuya orientalis. Northern China (Stanford) (some o<-carotene) 



(pigments of red-brown winter foliage in- 

 cluded much rhodoxanthin) o 



