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i . An}' flower of strong color is likely to develope paler var- 

 iants. These are doubtless due to a weakening of the pigment; 

 the}' do not, however, appear to be due to weak illumination, 

 for they occur side by side with the usual, strongly colored 

 forms. They give no real change of hue from the latter, but 

 are often of strikingly different appearance. Such forms are 

 Aqiiilegia canadensis with the usually red parts of the flower a 

 delicate salmon-pink; pink Lobelia cardinalis; pale blue Cam- 

 panula rotiindifolia; and pale yellow or cream-colored forms 

 of such usually orang or bright yellow blossoms as Impatiens 

 hiflora, I. pallida, Gratiola aiirea, Lysimachia terrestris, Hypericum 

 punctatum, and Potentilla pumila. 



2. Albinos — the commonest and best-known kind of color- 

 forms. Here, however. Dr. Gray's nota bene, that white forms 

 of all colored flowers are to be expected, seems to need emen- 

 dation. Such forms, pure white and destitute of any trace of 

 color, are to be expected in all blue, purple, magenta, and pink 

 and in some crimson, flowers. I have seen them, to cite a few 

 cases, in Campanula rotiindifolia, Hepatica americana, Sisyrinch- 

 ium atlanticum. Lobelia spicata, Habenaria fimbriata, Geranium 

 maculatum, Monarda mollis, Epilobium angustifolium, Rubus 

 odoratus, Agalinis purpurea, Teucrium canadense, and Sabatia 

 stellaris. But I have never seen a really white form of any 

 scarlet, orange, or yellow flower. Such a form has been credibly 

 reported in Gratiola aurea and there are at least two records of 

 white forms of Impatiens biflora. One of these I ran down and 

 was informed by its author that though he had heard of white 

 flowers in the species, all he had actually seen were cream-colored. 

 It seems safe to assume that albinism is, at the very least, much 

 rarer in flowers of the yellow than in those of the blue-pink 

 series. The same tendency seems to exist, or better, persist, 

 in cultivated plants. Take up any seedsman's catalogue and 

 }ou will find that in practically all flowers which were originally 

 blue, purple or pink, white forms are advertised; but you will 

 see no mention of white coreopsis or marigolds or sunflowers. 

 When, as in the case of the Cahfornia poppy, wall-flower, and 

 nasturtium, pale forms occur, they are described as "whitish" 

 or "creamy white," not "pure white" or" paper white," as in 

 the other series. And this would seem to parallel quite exactly 

 what takes place in the wild. 



