Everyday Objects; Or, Picturesque Aspects of Natural History.Adams, W. H. Davenport (William Henry Davenport)
History
Everyday Objects; Or, Picturesque Aspects of Natural History.
Adams, W. H. Davenport (William Henry Davenport)
Natural history
And it is, in truth, asserted--but, not having the eye of faith, the
editor cannot see any ground for the assertion--that its sagillate
or arrow-headed leaves, marked by a strongly-defined midrib, bear a
certain likeness to the "under bi-ungulated face" of the foot of a
young ruminant. Appearing in the early days of spring, they contrast
agreeably, by their shining verdure, with the colour of the dead
leaves heaped up at the base of the hedgerows. Simultaneously with
its leaves comes forth a curious organ,--rare in vegetables of
temperate regions, common in the tropical palms, and characteristic
of the family of the Aroidaceæ, to which our Arum belongs. This
organ, rolled up in a coil or spiral, is named the _spathe_.
It protects the flowers in their young state, and, as they are
developed, gradually falls off. Its colour is a greenish yellow; at
the summit it is sometimes streaked with purplish veins, and at the
base it swells out in a globose fashion.
A small thermometer, introduced into the interior of the rolled-up
spathe, indicates a rise of temperature equal to one or two degrees
above that of the external atmosphere. Whence comes this difference?
Because in the spathe is frequently found imprisoned another organ,
the seat of the mystery of reproduction. This organ is a fleshy axis,
on which are arranged the flowers in two distinct rings; the upper is
occupied by the stamens, reduced to simple anthers (sessile stamens);
observe the filamentous appendages--they are abortive ovaries. These
same appendages also surmount the lower ring, where several rows
are set of sessile ovaries; each ovary composed of a single lobe,
containing a very small number of ovules, the majority of which
miscarry as the ovaries become metamorphosed into bright red berries:
these are the fruits which appear in autumn; they form a spike or ear
of coral, each containing, ordinarily, a single seed. The flowers, as
a consequence of this separation of the two sexes, are _monœcious_;
the succulent axis which bears them is called a spadix.[53] On
tearing open the spathe, our glance first rests upon the apex of the
spadix, which has a club-like form, and is of a beautiful violet-red
colour. The two rings of sexual organs have much less attraction for
the profane; the lower ring, loaded with female flowers, is more
prominent than the upper ring, which bears the male flowers.
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