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ARUM FAMILY (Araceae)
Jack-in-the-Pulpit; Indian Turnip
Arisaema triphyllum
Flowers--Minute, greenish yellow, clustered on the lower part of a
smooth, club-shaped, slender spadix within a green and maroon or
whitish-striped spathe that curves in a broad-pointed flap above it.
Leaves: 3-foliate, usually overtopping the spathe, their slender
petioles 9 to 30 in. high, or as tall as the scape that rises from an acrid
corm. Fruit: Smooth, shining red berries clustered on the thickened
club.
Preferred Habitat--Moist woodland and thickets.
Flowering Season--April-June.
Distribution--Nova Scotia westward to Minnesota, and southward to
the Gulf states.
A jolly-looking preacher is Jack, standing erect in his parti-colored
pulpit with a sounding-board over his head; but he is a gay deceiver, a wolf
in sheep's clothing, literally a "brother to dragons," an arrant upstart, an
ingrate, a murderer of innocent benefactors! "Female botanizing classes
pounce upon it as they would upon a pious young clergyman," complains Mr.
Ellwanger. A poor relation of the stately calla lily one knows Jack to be at
a glance, her lovely white robe corresponding to his striped pulpit, her
bright yellow spadix to his sleek reverence. In the damp woodlands where his
pulpit is erected beneath leafy cathedral arches, minute flies or gnats,
recently emerged from maggots in mushrooms, toadstools, or decaying logs,
form the main part of his congregation.
Now, to drop the clerical simile, let us peep within the sheathing spathe,
or, better still, strip it off altogether. Doctor Torrey states that the
dark-striped spathes are the fertile plants, those with green and whitish
lines, sterile. Within are smooth, glossy columns, and near the base of each
we shall find the true flowers, minute affairs, some staminate; others, on
distinct plants, pistillate, the berry bearers; or rarely both male and
female florets seated on the same club, as if Jack's elaborate plan to
prevent self-fertilization were not yet complete. Plants may be detected in
process of evolution toward their ideals just as nations and men are.
Doubtless when Jack's mechanism is perfected, his guilt will disappear. A
little way above the florets the club enlarges abruptly, forming a
projecting ledge that effectually closes the avenue of escape for many a
guileless victim. A fungous gnat, enticed perhaps by the striped house of
refuge from cold spring winds, and with a prospect of food below, enters and
slides down the inside walls or the slippery, colored column: in either case
descent is very easy; it is the return that is made so difficult, if not
impossible, for the tiny visitors. Squeezing past the projecting ledge, the
gnat finds himself in a roomy apartment whose floor--the bottom of the
pulpit--is dusted over with fine pollen; that is, if he is among staminate
flowers already mature. To get some of that pollen, with which the gnat
presently covers himself, transferred to the minute pistillate florets
waiting for it in a distant chamber is, of course, Jack's whole aim in
enticing visitors within his polished walls; but what means are provided for
their escape? Their efforts to crawl upward over the slippery surface only
land them weak and discouraged where they started. The projecting ledge
overhead prevents them from using their wings; the passage between the ledge
and the spathe is far too narrow to permit flight. Now, if a gnat be
persevering, he will presently discover a gap in the flap where the spathe
folds together in front, and through this tiny opening he makes his escape,
only to enter another pulpit, like the trusted, but too trusting, messenger
he is, and leave some of the vitalizing pollen on the fertile florets
awaiting his coming.
But suppose the fly, small as he is, is too large to work his way out
through the flap, or too bewildered or stupid to find the opening, or too
exhausted after his futile efforts to get out through the overhead route to
persevere, or too weak with hunger in case of long detention in a pistillate
trap where no pollen is, what then? Open a dozen of Jack's pulpits, and in
several, at least, dead victims will be found--pathetic little corpses
sacrificed to the imperfection of his executive system. Had the flies
entered mature spathes, whose walls had spread outward and away from the
polished column, flight through the overhead route might have been possible.
However glad we may be to make every due allowance for this sacrifice of the
higher life to the lower, as only a temporary imperfection of mechanism
incidental to the plant's higher development, Jack's present cruelty shocks
us no less. Or, it may be, he will become insectivorous like the pitcher
plant in time. He comes from a rascally family, anyhow. His cousin, the
cuckoo-pint, as is well known, destroys the winged messenger bearing its
offspring to plant fresh colonies in a distant bog, because the decayed body
of the bird acts as the best possible fertilizer into which the seedling may
strike its roots.
In June and July the thick-set club, studded over with bright berries,
becomes conspicuous, to attract hungry woodland rovers in the hope that the
seeds will be dropped far from the parent plant. The Indians used to boil
the berries for food. The farinaceous root (corm) they likewise boiled or
dried to extract the stinging, blistering juice, leaving an edible little
"turnip," however insipid and starchy.
Skunk or Swamp Cabbage
Symplocarpus foetidus
Flowers--Minute, perfect, foetid; many scattered over a thick,
rounded, fleshy spadix, and hidden within a swollen, shell-shaped,
purplish-brown to greenish-yellow, usually mottled, spathe, close to the
ground, that appears before the leaves. Spadix much enlarged and spongy in
fruit, the bulb-like berries imbedded in its surface. Leaves: In
large crowns like cabbages, broadly ovate, often 1 ft. across, strongly
nerved, their petioles with deep grooves, malodorous.
Preferred Habitat--Swamps, wet ground.
Flowering Season--February-April.
Distribution--Nova Scotia to Florida, and westward to Minnesota
and Iowa.
This despised relative of the stately calla lily proclaims spring in the
very teeth of winter, being the first bold adventurer above ground. When the
lovely hepatica, the first flower worthy the name to appear, is still
wrapped in her fuzzy furs, the skunk cabbage's dark, incurved horn shelters
within its hollow, tiny, malodorous florets. Why is the entire plant so
foetid that one flees the neighborhood, pervaded as it is with an odor that
combines a suspicion of skunk, putrid meat, and garlic? After investigating
the Carrion-flower and the Purple Trillium, among others, we learned that
certain flies delight in foul odors loathsome to higher organisms; that
plants dependent on these pollen carriers woo them from long distances with
a stench, and in addition sometimes try to charm them with color resembling
the sort of meat it is their special mission, with the help of beetles and
other scavengers of Nature, to remove from the face of the earth. In such
marshy ground as the Skunk Cabbage lives in, many small flies and gnats live
in embryo under the fallen leaves during the winter. But even before they
are warmed into active life, the hive-bees, natives of Europe, and with
habits not perfectly adapted as yet to our flora, are out after pollen.
After the flowering time come the vivid green crowns of leaves that at
least please the eye. Lizards make their home beneath them, and many a
yellowthroat, taking advantage of the plant's foul odor, gladly puts up with
it herself and builds her nest in the hollow of the cabbage as a protection
for her eggs and young from four-footed enemies. Cattle let the plant alone
because of the stinging acrid juices secreted by it, although such tender,
fresh, bright foliage must be especially tempting, like the hellebore's,
after a dry winter diet. Sometimes tiny insects are found drowned in the
wells of rain water that accumulate at the base of the grooved leafstalks.
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