Most individuals of
Impatiens balsamina show the spiral phyllotaxy with the divergence angle nearly similar to the limit value of the Fibonacci series. Although various patterns of the phyllotactic abnormality (Figs. 1-2) are often found, the individuals of those patterns were excluded from the statistical samples. Early and late varieties were cultivated in the same season or seeds of one variety were sown in different seasons. In one case, seedlings germinated in spring were cultivated in very poor soil. Samples thus obtained were compared with each other in respect of their frequency variation of the primary branch with a cathodic prophyll (Fig. 3, Fig. 4, A). It was suggested that the general trend of the frequency variation is, in the case of
Impatiens balsamina, much more affected by the vegetative vigour of the plant rather than by the characteristics of the variety or photoperiodic reaction, while the frequency variation of the cathodic prophyll at the basal part of the main axis (A in Fig. 3) shows one pattern fundamentally common to each statistical sample. Statistical data concerning the cathodic position of the prophyll, in
Impatiens balsamina and
Kochia scoparia presented here, were compared to those of
Erigeron sumatrensis and
Xanthium canadense described in previous papers of the writer.
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