Out of the above 211 seedlings, 173 belonged to the
same two forms as their parents, and only 38 belonged to the third form distinct
from either parent. In the case of O. Regnelli, the result, as observed by
Hildebrand, was nearly the same, but more striking: all the offspring from four
of the legitimate unions consisted of the two parent-forms, whilst amongst the
seedlings from the other two legitimate unions the third form appeared. Thus, of
the 43 seedlings from the six legitimate unions, 35 belonged to the same two
forms as their parents, and only 8 to the third form. Fritz Muller also raised
in Brazil seedlings from long-styled plants of O. Regnelli legitimately
fertilised with pollen from the longest stamens of the mid-styled form, and all
these belonged to the two parent-forms. (5/5. 'Jenaische Zeitschrift' etc. Band
6 1871 page 75.) Lastly, seedlings were raised by me from long-styled plants of
O. speciosa legitimately fertilised by the short-styled form, and from the
latter reciprocally fertilised by the long-styled; and these consisted of 33
long-styled and 26 short-styled plants, with not one mid-styled form. There can,
therefore, be no doubt that the legitimate offspring from any two forms of
Oxalis tend to belong to the same two forms as their parents; but that a few
seedlings belonging to the third form occasionally make their appearance; and
this latter fact, as Hildebrand remarks, may be attributed to atavism, as some
of their progenitors will almost certainly have belonged to the third form.
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