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Soon the smaller ones show their deeper green and broader leaves, and thereby display the attributes of the scintillans. The other grow faster and stronger and exhibit all the characteristics of ordinary lamarckianas. The numerical proportion of these two groups has been found different on different occasions.

With the exception of gigas all the described forms sprang anew from the purely fertilized ancestry of normal lamarckianas. It was now the fifth generation of my pedigree, and thus I was absolutely sure that the descendants of the mutants of this year had been pure and without deviation for at least four successive generations.

But, on the contrary, the atavists, which are here the individuals with the stature and the characteristics of the lamarckiana, have become lamarckianas in their hereditary qualities, too. If their seed is saved and sown, their progeny does not contain any scintillans, or at least no more than might arise by ordinary mutations.

This cause must be assumed to lie dormant in the Lamarckianas of my strain, and probably in all of them, as no single parent-plant proved ever to be wholly destitute of mutability. Furthermore the different causes for the sundry mutations must lie latent together in the same parent-plant.

It formed a little group of plants growing at some distance from the main body, in the same field. I found some rosettes and some flowering stems and sowed some seed in the fall. The variety has been quite constant in the field, neither increasing in number of individual plants nor changing its place, though now closely surrounded by other Lamarckianas.