CHAPTER VIII. 



STRIKING CONTRASTS OF COLOR IN THE SAME FLOWER. 



The green calyx is often found to l)c reddeninsi' or pur- 

 pling at the same time that the corolla iw .some other color, 

 as white or yellow. This incipient change of color contin- 

 ues in some species until a clear l)right color is cstal)lislied, 

 contrasting strongly with the color of the petals. This fact 

 is of itself sufficient proof that original colors develop in 

 different ways. 



Examples of diversity of color in the different whorls of 

 the same tlower are numerous, even among our native flora ; 

 we will refer to a few of these, but give a more extended 

 list of exotics. It is often the case that the outer whorl of 

 calyx is so much more developed that the inner is completely 

 hidden from view, as in Masdevalias. 



.Delphinium varief/aium, sepals i)uri)le, petals white. 



Do. nudicale, se[)als red, petals yellow. 

 Polygala saiKjuinea, sepals pur})le and green, })etals yellow. 

 Heliant]te)num Canadeuiie, sepals tinged with red, [)etals 



yellow. 

 Senecio aureus, tips of green sepiils dull purple, ilowcr 



yellow. 

 Leucothoe racemosa, calyx and ))racts dark red, corolla 



white. 

 Prenanthes alba, involucre purplish, })etals cream (-olor. 

 Nupliar advena, sepals green, brown within, petals yellow. 

 Anaphalis mar//arifacea, involucral scales snow white, 



true flower is diminutive, and of a yellow color. 

 Billbergia vittata, flowers indigo-blue, tubular calyx car- 

 mine. 

 Iris Kolpahowskiana, falls red and yellow, uprights blue. 



