enations

The view here propounded that the lobes in question are enations from the true petals, which become confluent, so as to form the catacorolla, is surely more simple, involves no assumptions of suppression of parts; and moreover, is borne out by the examination of some flowers, where the production of these adventitious lobes from the outside of the minute partially developed petals could be distinctly seen.

Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters

The inner surface of these enations corresponds to the opposite side of the leaf, both in color and in anatomical structure.

Species and Varieties, Their Origin by Mutation Hugo de Vries 1891

Such partial malformations obey a rule, that is common to them and to other foliar enations, viz.: that the side of the leaf from which they emerge, is always their outer side.

Species and Varieties, Their Origin by Mutation Hugo de Vries 1891