Part 20

Black Mustard

Brassica nigra

Flowers--Bright yellow, fading pale, 1/4 to 1/2 in. across, 4-parted, in elongated racemes; quickly followed by narrow, upright 4-sided pods about 1/2 in. long appressed against the stem. Stem: Erect, 2 to 7 ft. tall, branching. Leaves: Variously lobed and divided, finely toothed, the terminal lobe larger than the 2 to 4 side ones.

Preferred Habitat--Roadsides, fields, neglected gardens.

Flowering Season--June-November.

Distribution--Common throughout our area; naturalized from Europe and Asia.

“The kingdom of heaven is like unto a grain of mustard seed, which a man took and sowed in his field: which indeed is less than all seeds; but when it is grown, it is greater than the herbs, and becometh a tree, so that the birds of the air come and lodge in the branches thereof.”

Commentators differ as to which is the mustard of the parable--this common Black Mustard, or a rarer shrub-like tree (Salvadora Persica), with an equivalent Arabic name, a pungent odor, and a very small seed. Inasmuch as the mustard which is systematically planted for fodder by Old World farmers grows with the greatest luxuriance in Palestine, and the comparison between the size of its seed and the plant’s great height was already proverbial in the East when Jesus used it, evidence strongly favors this wayside weed. Indeed, the late Doctor Royle, who endeavored to prove that it was the shrub that was referred to, finally found that it does not grow in Galilee.

Now, there are two species which furnish the most powerfully pungent condiment known to commerce; but the tiny dark brown seeds of the Black Mustard are sharper than the serpent’s tooth, whereas the pale brown seeds of the White Mustard, often mixed with them, are far more mild. The latter (Brassica alba) is a similar, but more hairy, plant, with slightly larger yellow flowers. Its pods are constricted like a necklace between the seeds.

The coarse Hedge Mustard (Sisymbrium officinale), with rigid, spreading branches, and spikes of tiny pale yellow flowers, quickly followed by awl-shaped pods that are closely appressed to the stem, abounds in waste places throughout our area. It blooms from May to November, like the next species.

Another common and most troublesome weed from Europe is the Field or Corn Mustard, Charlock or Field Kale (Brassica arvensis) found in grain fields, gardens, rich waste lands, and rubbish heaps. The alternate leaves, which stand boldly out from the stem, are oval, coarsely saw-toothed, or the lower ones more irregular, and lobed at their bases, all rough to the touch, and conspicuously veined.

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.

SUNDEW FAMILY (Droseraceae)

Round-leaved Sundew; Dew-plant

Drosera rotundifolia

Flowers--Small, white, growing in a 1-sided, curved raceme of buds chiefly. Calyx usually 5-parted; usually 5 petals, and as many stamens as petals; usually 3 styles, but 2-cleft, thus appearing to be twice as many. Scape: 4 to 10 in. high. Leaves: Growing in an open rosette on the ground; round or broader, clothed with reddish bristly hairs tipped with purple glands, and narrowed into long, flat, hairy petioles; young leaves curled like fern fronds.