13 



In GaUlardia tho centriil florets are always green to dark 

 purple- brown. 



JVuphar advena, Yellow Pond Lily : the three outer sepals 

 often have a reddish-brown band or blotch on the upper 

 side, appearing even in the bud, through the green color, 

 before any yellow is developed. In some specimens the 

 sepals are almost wholly of this chocolate color, which may 

 have been the original color; at all events it is perfectly 

 obvious that the brown color is earlier than the yellow. 



When green and l)rown are the primary colors, by the 

 changing of green to yellow, an exceedingly common color 

 change, we obtain yellow and brown ; then Nature by 

 some secret art often transmutes the brown into yellow, 

 one of its component ))arts, by eliminating the others, with 

 the result of a wholly yellow flower. Thus as regards the 

 relations of yellow and brown to green, it is found that the 

 one is as close as the other, that brown in many instances is 

 the older color, that when brown is a self-color on the flrst 

 departure, then yellow must rank as second. 



In Chrymnthemums the central, tubular florets are yellow 

 as is commonly the case in Composites; the rays in the 

 wild flower are usually white, a color which in this instance 

 evidently was preceded by the yelloW' color of the disc 

 flowers, from which the rays were developed. In examin- 

 ing a semi-double Chinese flow^er, one may occasionally see 

 among the tubular florets the ligulate form in various stages 

 of development, short or long, flattened out partially or 

 wholly, but whenever on the disc this altered flower is seen 

 among the tubular ones, and in whatever stage of develop- 

 ment, the color is found to be changed to white ! 



A change of form is often the occasion of a change of 

 color. These transformed florets, now all white and strain- 

 shaped, not infrequently become tinted a flesh color, a pink, 

 or some form of purple or perhaps blue. This sequence of 

 colors might be farther expanded to embrace the following : 

 yellow, white, flesh color, pink, rose, carmine, crimson. 



