- 35 = 



The red winter foliage of the ornamental Cryptomeria japonica^ var. 

 elegans (Taxodiaceae) growing at Stanford contained large quantities of 

 rhodoxanthin, which disappeared again in the spring as the leaves became 

 greeno This rhodoxanthin was isolated from the winter foliage of 

 Cryptomeria by adsorption in columns of powdered sugar of Celite, In 

 the sugar columns it formed a red zone between the lutein and the chlo- 

 rophyll a^o Its spectral absorption curves are reproduced in Figure 

 II, 2o 



Although rhodoxanthin is veiy weakly sorbed in columns of sugar 

 and of Celite, it is very strongly sorbed in columns of magnesia^ even 

 with petroletun ether plus 25 psr cent acetone as the wash liquids In 

 the magnesia columns, it is more sorbed that the strongly sorbed 

 siphonaxanthin and zeaxanthin plus neoxanthin^a 



Chloroplast Pigments of the Nonflowering Plants, Ferns, Horsetails^ 

 Club Mosses and Quillworts (Pteridophytes), of Mosses and Liverworts 

 (Bryophytes) g and of Stoneworts (Certain Chlorophytes) 



TaxonoF.ically, both the flowerless, spore-bearing plants and the 

 flowering plants evolved from common ancestors^* o This phylogenetic 

 relationship is supported by the nature of the chloroplast pigments « 

 For example,, a number of ferns, horsetails and club mosses and a quill- 

 wort yielded the same chloroplast pigments found in the flowering 

 plants o The species examined are tabulated in Appendix II, 



Several mosses (Musci), liverworts (Hepaticae), a lichen (Lichenes) 

 and a stonewort (Chrophyceae) also yielded the same chloroplast pig~ 

 ments foimd in leaves. The species of mosses and liverworts that were 

 examined are tabulated in Appendix III, The lichen yielded pigments 



