There are one or two other species of sundew--one of them almost as common
in Europe and North America as the ordinary round-leaved species--which act
in the same way, except that, having their leaves longer in proportion to
their breadth, their sides never curl inward, but they are much disposed to
aid the action of their tentacles by incurving the tip of the leaf, as if
to grasp the morsel. There are many others, with variously less efficient
and less advantageously arranged insectivorous apparatus, which, in the
language of the new science, may be either on the way to acquire something
better, or of losing what they may have had, while now adapting themselves
to a proper vegetable life. There is one member of the family (Drosophyllum
Lusitanicum), an almost shrubby plant, which grows on dry and sunny hills
in Portugal and Morocco--which the villagers call "the flycatcher," and
hang up in their cottages for the purpose--the glandular tentacles of which
have wholly lost their powers of movement, if they ever had any, but which
still secrete, digest, and absorb, being roused to great activity by the
contact of any animal matter. A friend of ours once remarked that it was
fearful to contemplate the amount of soul that could be called forth in a
dog by the sight of a piece of meat. Equally wonderful is the avidity for
animal food manifested by these vegetable tentacles, that can "only stand
and wait" for it.
Only a brief chapter is devoted to Dionaea of North Carolina, the Venus's
fly-trap, albeit, "from the rapidity and force of its movements, one of the
most wonderful in the world." It is of the same family as the sundew; but
the action is transferred from tentacles on the leaf to the body of the
leaf itself, which is transformed into a spring-trap, closing with a sudden
movement over the alighted insect. No secretion is provided beforehand
either for allurement or detention; but after the captive is secured,
microscopic glands within the surface of the leaf pour out an abundant
gastric juice to digest it. Mrs. Glass's classical directions in the
cook-book, "first catch your hare," are implicitly followed.
Public-domain text, read in full here on John Shaqi.
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