remarked, be
absolutely excluded, from the want of any evidence, from the great
amount of change thus implied, {391} and from the sterility of the
intermediate form. Nevertheless such cases as nectarines suddenly
appearing on peach-trees, occasionally with the fruit half-and-half in
nature,--moss-roses appearing on other roses, with the flowers divided
into halves, or striped with different colours,--and other such cases,
are closely analogous in the result produced, though not in origin,
with the case of _C. adami_.

A distinguished botanist, Mr. G. H. Thwaites,[908] has recorded a
remarkable case of a seed from _Fuchsia coccinea_ fertilised by _F.
fulgens_, which contained two embryos, and was "a true vegetable twin."
The two plants produced from the two embryos were "extremely different
in appearance and character," though both resembled other hybrids of
the same parentage produced at the same time. These twin plants "were
closely coherent, below the two pairs of cotyledon-leaves, into a
single cylindrical stem, so that they had subsequently the appearance
of being branches on one trunk." Had the two united stems grown up to
their full height, instead of dying, a curiously mixed hybrid would
have been produced; but even if some of the buds had subsequently
reverted to both parent-forms, the case, although more complex, would
not have been strictly analogous with that of _C. adami_. On the other
hand, a mongrel melon described by Sageret[909] perhaps did thus
originate; for the two main branches, which arose from two
cotyledon-buds, produced very different fruit,--on the one branch like
that of the paternal variety, and on the other branch to a certain
extent like that of the maternal variety, the melon of China.

The famous _bizzarria Orange_ offers a strictly parallel case to that
of _Cytisus adami_. The gardener who in 1644 in Florence raised this
tree, declared that it was a seedling which had been grafted; and after
the graft had perished, the stock sprouted and produced the bizzarria.
Gallesio, who carefully examined several living specimens and compared
them with the description given by the original describer P. Nato,[910]
states that the tree produces at the same time leaves, flowers, and
fruit, identical with the bitter orange and with the citron of
Florence, and likewis