|
PITCHER-PLANT FAMILY (Sarracenaceae)
Pitcher-plant; Side-saddle Flower; Huntsman's Cup; Indian Dipper
Sarracenea purpurea
Flower--Deep reddish purple, sometimes partly greenish, pink, or
red, 2 in. or more across, globose; solitary, nodding from scape 1 to 2 ft.
tall. Calyx of 5 sepals, with 3 or 4 bracts at base; 5 overlapping petals,
enclosing a yellowish, umbrella-shaped dilation of the style, with 5 rays
terminating in 5-hooked stigmas; stamens indefinite. Leaves: Hollow,
pitcher-shaped through the folding together of their margins, leaving a
broad wing; much inflated, hooded, yellowish green with dark maroon or
purple lines and veinings, 4 to 12 in. long, curved, in a tuft from the
root.
Preferred Habitat--Peat-bogs; spongy, mossy swamps.
Flowering Season--May-June.
Distribution--Labrador to the Rocky Mountains, south to Florida,
Kentucky, and Minnesota.
"What's this I hear
About the new carnivora?
Can little plants
Eat bugs and ants
And gnats and flies?
A sort of retrograding:
Surely the fare
Of flowers is air
Or sunshine sweet;
They shouldn't eat
Or do aught so degrading!"
There must always be something shocking in the sacrifice of the higher
life to the lower, of the sensate to what we are pleased to call the
insensate, although no one who has studied the marvellously intelligent
motives that impel a plant's activities can any longer consider the
vegetable creation as lacking sensibility. Science is at length giving us a
glimmering of the meaning of the word universe, teaching, as it does, that
all creatures in sharing the One Life share in many of its powers, and
differ from one another only in degree of possession, not in kind. The
transition from one so-called kingdom into another presumably higher one is
a purely arbitrary line marked by man, and often impossible to define. The
animalcule and the insectivorous plant know no boundaries between the animal
and the vegetable. And who shall say that the sundew or the bladderwort is
not a higher organism than the amoeba? Animated plants and vegetating
animals parallel each other. Several hundred carnivorous plants in all parts
of the world have now been named by scientists.
It is well worth a journey to some spongy, sphagnum bog to gather clumps
of pitcher-plants which will furnish an interesting study to an entire
household throughout the summer while they pursue their nefarious business
in a shallow bowl on the veranda. A modification of the petiole forms a
deep, hollow pitcher having for its spout a modification of the blade of the
leaf. Usually the pitchers are half filled with water and tiny drowned
victims when we gather them. Some of this fluid must be rain, but the open
pitcher secretes much juice, too. Certain relatives, whose pitchers have
hooded lids that keep out rain, are nevertheless filled with fluid. On the
Pacific Coast the golden jars of Darlingtonia californica, with their
overarching hoods, are often so large and watery as to drown small birds and
field mice. Note in passing that these otherwise dark prisons have
translucent spots at the top, whereas our pitcher-plant is lighted through
its open transom.
A sweet secretion within the pitcher's rim, which some say is
intoxicating, others that it is an anesthetic, invites insects to a fatal
feast. It is a simple enough matter for them to walk into the pitcher over
the band of stiff hairs pointing downward like the withes of a lobster pot,
that form an inner covering, or to slip into the well if they attempt
crawling over its polished upper surface. To fly upward in a perpendicular
line, once their wings are wet, is additionally hopeless, because of the
hairs that guard the mouth of the trap; and so, after vain attempts to fly
or crawl out of the prison, they usually sink exhausted into a watery grave.
When certain plants live in soil that is so poor in nitrogen compounds
that proteid formation is interfered with, they have come to depend more or
less on a carnivorous diet. The sundew actually digests its prey with the
help of a gastric juice similar to what is found in the stomach of animals;
but the bladderwort and pitcher-plants can only absorb in the form of soup
the products of their victims' decay. Flies and gnats drowned in these
pitchers quickly yield their poor little bodies; but owing to the beetle's
hard shell covering, many a rare specimen may be rescued intact to add to a
collection.
A similar ogre plant is the yellow-flowered Trumpet-leaf (S. flava)
found in bogs in the Southern states.
|