Botany for Ladies: or, A Popular Introduction to the Natural System of Plants, According to the Classification of De Candolle.Loudon, Mrs. (Jane)
Science
Botany for Ladies: or, A Popular Introduction to the Natural System of Plants, According to the Classification of De Candolle.
Loudon, Mrs. (Jane)
Botany; Plants -- Classification
When the outer coverings of calyx and corolla are thus
both removed, the seed-producing organs will be discovered, and it
will be found that they consist of five very curiously-formed stamens,
with as singular a pistil, in their centre. The stamens have no
apparent filaments, and the anthers, which seem to be inserted in the
receptacle, look like seeds, each tipped with a bit of brown skin, and
having what appears to be a white rib in front. This rib is the anther;
and the broader part is the dilated filament, which is drawn out beyond
it, on both sides, and above, so as to form the brown tip above the
anther already mentioned. Two of the anthers have each, in addition to
these peculiarities, a long tail, which the spur of the lower petal
concealed, when the flower was in a perfect state. The pistil consists
of a large ovary, full of ovules, with a narrow style, which is drawn
out into the hollow globular termination which is seen through the
triangular opening in the flower. The globe has an opening in front,
under which is a kind of lip, which looks like a shutter let down to
show the opening; and though, from its thick fleshy nature, it looks
like a stigma, it is only the outer covering of that organ, for the
stigma lies within the opening. In this manner the stigma and anthers
are completely concealed; and thus it will be seen, that nothing can be
more complex and intricate than the construction of the flowers of the
Heartsease.
Who could suppose that all these elaborate details would be necessary
to illustrate so simple a flower as that of the Violet? And yet the
construction of the flowers of the Violet and those of the Heartsease
are essentially the same. The sepals of the Violet are extended at
the base, like those of the Heartsease, and the corolla consists of
the same number of petals, which are equally irregular in their form,
though not in their colour; the lower petal is drawn out, in the same
manner, into a spur, which is much longer than that of the Heartsease,
though the rest of the flower is smaller. The stamens are formed with
the same regular irregularity, only the tails of the two irregular
ones are larger and stronger, in the same proportion as the spur is
larger which is intended to conceal them. The pistil is of the same
shape, with the same curiously constructed and perforated style, which
is bent in its narrow part and swelled out into a hollow globe at the
tip; and in both species, the ovary is one-celled with three parietal
placentas, that is, with three nerve-like projections from the sides of
the capsule, having four rows of seeds attached to each. The capsule
looks like a smooth shining berry, and it remains partially shrouded by
the calyx, till the seeds are ripe; when it bursts open with an elastic
spring, and divides into three valves, each of which has the placenta
bearing the seeds in its centre.
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