Vegetable Teratology: An Account of the Principal Deviations from the Usual Construction of PlantsMasters, Maxwell T. (Maxwell Tylden)
Science
Vegetable Teratology: An Account of the Principal Deviations from the Usual Construction of Plants
Masters, Maxwell T. (Maxwell Tylden)
Plants -- Abnormalities
The following singular growth in a tomato is described by the Rev. M.
J. Berkeley in the 'Gardeners' Chronicle' for 1866, p. 1217, and appears
to have been an extension of the placenta:--"On the first glance it
seemed as if an unusually large grape-stone had accidentally fallen on
the upper surface of the fruit, and was attached by the narrow base. The
process was, however, five lines long, and much narrowed below, besides
which, though it was pale green above, the base was coral-red, like the
tomato itself. It grew on a narrow and shallow crack on the surface of
the fruit, and was found below to communicate directly with a
fibro-vascular bundle, which entered into the composition of a portion
of the placenta. On making a vertical section, instead of being
succulent, as I expected, it was white and spongy within, with several
lacunae, and one or two irregular fibro-vascular bundles, with highly
developed spiral vessels threading the centre. These vessels, moreover,
were tinged with brown, as in many cases of diseased tissues. There was
not the slightest appearance of placentae or anything indicating an
abortive fruit. On closer examination the cuticle was found to consist
of thick-walled cells, exactly like those of the tomato, while the
spongy mass consisted of a similar tissue to the fleshy portion of the
fruit, but with far less wrinkled walls, and more indistinct
intercellular spaces. The most striking point, however, was the immense
quantity of very irregular and unequal starch-grains with which they
were gorged, which gave a peculiar sparkling appearance to them when
seen _en masse_. I am inclined to regard the body rather as an abortive
axis than an undeveloped fruit. In almost all, if not all, these cases
of abnormal growth, whether from leaves, petioles, fruit, or other
portions of the plant, we find an immediate connection with one or more
spiral vessels, which if not existent at first are developed sooner or
later. In the present case the connection of the fibro-vascular tissue
of the fruit and abnormal growth was plain enough, but whether it
existed when the body was first given off I am unable to say, as it was
fully developed when the fruit was brought to me."
=Enlargement of the leaves.=--Increase in the size or substance of
leaves takes places in several ways, and affects the whole or only
certain portions of them. The simplest form of this malformation is met
with in our cabbages, which, by the art of the gardener, have been made
to produce leaves of greater size and thickness than those which are
developed in the wild form. In such instances the whole substance of the
leaf is increased in bulk, and the increase affects the fibrous
framework of the leaves as well as the cellular portions, though the
exaggerated development of the latter is out of proportion to that of
the former.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account