| → touch 1859 1860 1861 1866 1869 |
| ensure fertilisation, just to touch with the same brush 1872 |
|
| → with the same brush to ensure fertilisation; 1859 1860 1861 1866 1869 |
| OMIT 1872 |
|
| → you bring on the same brush 1859 1860 1861 1866 1869 |
| OMIT 1872 |
|
| → the former will have such a prepotent effect, 1859 1860 1861 1866 1869 |
| are placed on the same stigma, the former is so prepotent 1872 |
|
| → any aids for self-fertilisation, 1859 1860 1861 1866 1869 |
| favoured, 1872 |
|
| → as 1859 1860 1861 1866 1869 |
| which effectually prevent the stigma receiving pollen from its own flower, as 1872 |
|
| → from 1859 1860 1861 1866 1869 |
| others, as well as from 1872 |
|
| → which effectually prevent the stigma receiving pollen from its own flower: 1859 1860 1861 1866 1869 |
| OMIT 1872 |
|
| → all 1861 1866 1869 1872 |
| every one of 1859 1860 |
|
|
to
→touch
the anthers of one flower and then the stigma of
→with the same brush to ensure fertilisation;
but it must not be supposed that bees would thus produce a multitude of hybrids between distinct species; for if
→you bring on the same brush
a
own pollen and
from another
→the former will have such a prepotent effect,
that it
invariably and completely
as has been shown by
influence
the foreign pollen. |
|
| When the stamens of a flower suddenly spring towards the pistil, or slowly move one after the other towards it, the contrivance seems adapted solely to ensure self-fertilisation; and no doubt it is useful for this end:
the agency of insects is often required to cause the stamens to spring forward, as
has shown to be the case with the barberry; and
in this very genus, which seems to have a special contrivance for self-fertilisation, it is well known
if
closely-allied forms or varieties are planted near each other, it is hardly possible to raise pure seedlings, so largely do they naturally cross. In
other cases, far from
being
→any aids for self-fertilisation,
there are special
→as
I could show from the
of
Sprengel and
→from
my own
→which effectually prevent the stigma receiving pollen from its own flower:
for instance, in Lobelia fulgens, there is a really beautiful and elaborate contrivance by which
→all
the infinitely numerous pollen-granules are swept out of the conjoined anthers of each flower, before the stigma of that individual flower is ready to receive them; and as this flower is never visited, at least in my garden, by insects, it never sets a seed, though by placing pollen from one flower on the stigma of another, I raised plenty of
|
