Part 23

There are many kinds of Cassia, abundant in tropical America; herbs, shrubs, or trees; leaflets even in number; flowers usually yellow; calyx-teeth nearly equal; corolla almost regular, with five, nearly equal, spreading petals, with claws; stamens usually ten, sometimes five, often unequal, some of the anthers often imperfect, or lacking; pod flat or cylindrical, often curved, sometimes with partitions between the numerous seeds.

The peculiar orange-yellow of these handsome flowers at once attracts our attention, for their tint is quite different from the greenish-yellow, which is so much more common. They grow in the desert, forming big clumps, two feet high and two or three feet across, but have almost no foliage. The numerous, smooth stems are very pale in color, often bluish or gray, with a few dark-green leaves, with six, very small, stiff leaflets, and bearing clusters of numerous, sweet-smelling flowers, almost regular and about three-quarters of an inch across, with a downy calyx and the small, flat pod also downy.

MIMOSA FAMILY. Mimosaceae.

A large family, most of them tropical; herbs, shrubs, or trees; leaves alternate, generally compound, usually with two or three leaflets; flowers small, regular and perfect, in clusters; calyx with three to six lobes or teeth; petals of the same number, separate, or more or less united, neither sepals nor petals overlapping in the bud; stamens as many as the petals, or twice as many, or numerous, separate or united; ovary superior; fruit a pod.

There are several kinds of Calliandra, low shrubs or herbs.

An odd little shrub, pretty and very Japanese in character, about a foot tall, with a few, pale-gray, spreading branches and very scanty foliage. The small leaves are cut into many tiny leaflets and look like those of a Mimosa, the buds are deep pink and the flowers are in clusters towards the ends of the branches and slightly sweet-scented. They are very queer-looking, but exceedingly pretty, for the purplish calyx and corolla are so small that the flower appears to be merely a tuft of many stamens, about an inch long, with threadlike filaments, white at base and shading to bright pink at the tips. The pistil is also long and pink, so the whole effect is a bunch of pink fuzz, airy in form and delicately shaded in color. These little shrubs sometimes bloom when they are only a few inches high, looking very quaint, like dwarf plants in a toy garden, and are among the earliest spring flowers.

KRAMERIA FAMILY. Krameriaceae.

A small family, distributed from the southern United States to Chili; hairy herbs or low shrubs, without stipules; leaves alternate; two bracts on the flower-stalk; flowers purplish, irregular, perfect; sepals four or five, usually large, the outer one commonly wider than the others; petals usually five, smaller than the sepals, the three upper ones with long claws, often united by their claws, sometimes the middle one of the three lacking, the two lower ones reduced to mere fleshy glands and not resembling petals; stamens three or four, united at least at base; ovary superior, with a slender style; fruit spiny, seed one.

A desert shrub, with a pleasant smell like balsam, two to four feet high, with gray, woody stems, abruptly branching, armed with long, brown and gray thorns, and clothed with very small, silvery-gray leaves, downy and thickish. The flowers are curious in shape and color, with five, large, purplish-pink sepals and five, small petals, the two lower ones minute and reduced to glands. The pistil is dark red, the three stamens have green filaments and red anthers, the ovary is downy and prickly, and the downy buds are pale pink.

CALTROP FAMILY. Zygophyllaceae.

Not a large family, widely distributed in warm and tropical regions; ours are herbs or shrubs, with opposite or alternate, compound leaves, with stipules and toothless leaflets; flowers complete, usually with five sepals and five petals, and usually twice the number of stamens, with swinging anthers, alternate stamens sometimes longer, filaments often with a small scale near the middle; ovary superior, usually surrounded at the base by a disk; style one, with a five- to ten-lobed stigma; fruit dry.

There are several kinds of Covillea.

A graceful, evergreen shrub, common in arid regions and a characteristic feature of the desert landscape, filling the air with its very strong, peculiar odor. It is from three to ten feet high, with many little branches, with blackish knots at the joints, clothed with sticky, dull yellowish-green foliage, the thickish, resinous leaflets very small, in pairs, with almost no leaf-stalk, and uneven at base. The pretty flowers are nearly an inch across, with bright yellow petals, with claws, and silky, greenish-yellow sepals which soon drop off. The filaments are broadened below into wings and have a scale on the inner side. The ovary is covered with pale, silky hairs, so that the older flowers have a silky tuft in the center, and becomes a round, densely hairy fruit, with a short stalk, tipped with the slender style. These little white, silky balls of down are very conspicuous and, as they are mingled with yellow flowers, the bush has an odd and pretty effect of being spotted all over with yellow and white.

Crimson-beak--Krameria Grayi.]

FLAX FAMILY. Linaceae.

A small family, widely distributed in temperate and tropical regions. Ours are smooth herbs, with loosely clustered, complete flowers, having five sepals; five petals, alternating with the sepals; five stamens, alternating with the petals, with swinging anthers and filaments united at the base; ovary superior; fruit a capsule, containing eight or ten, oily seeds.

There are many kinds of Flax, sometimes shrubby at base; with tough fibers in the bark; leaves without stipules, sometimes with glands at base in place of real stipules; flowers mostly blue or yellow. There are numerous, small-flowered, annual kinds, difficult to distinguish and usually somewhat local. L. usitatíssimum, an annual, with deep blue flowers, is the variety which, from time immemorial, has furnished the world with linen from its fiber and oil from its seeds. Linum is the ancient Latin name.

An attractive plant, from one to two feet tall, with several, erect stems, springing from a woody, perennial root, with numerous, small, narrow, bluish-green leaves and loose clusters of pretty flowers, each about an inch across. The petals, delicately veined with blue, vary in tint from sky-blue to almost white, with a little yellow at the base. This is common and widely distributed, from Manitoba to Texas and westward, but the fiber is not strong enough to be used commercially.

WOOD-SORREL FAMILY. Oxalidaceae.

Not a large family, mostly tropical. Ours are low herbs, with sour juice, often with rootstocks or scaly bulbs; leaves with three or several leaflets; flowers perfect; sepals five, often unequal; petals five, stamens ten to fifteen; ovary superior, five-celled, the five styles usually separate; fruit a capsule, containing several or many seeds. By some botanists this is merged in the Geranium Family.

There are many kinds of Oxalis. The Greek name means "sour," in allusion to the sour taste of these plants, which contain oxalic acid. The leaves are alternate, at nightfall the leaflets droop and fold together; the stamens are ten, five long and five short, all with anthers, with filaments broadened and united at base.

A pretty little plant, a few inches tall, more or less downy all over, with very slender, reddish, branching stems and light green leaves, about an inch across and thin in texture. The flowers are over half an inch across, with clear yellow petals, often tinged with pale red on the outside, yellow anthers and a green pistil. The capsules are long and downy.

One of the most attractive of our woodland plants. The succulent, hairy, reddish flower-stalks, about six inches tall, with two small bracts near the top, spring from a clump of root-leaves. The larger leaves are three inches across, with long leaf-stalks, pale and hairy on the under side, rich green on the upper, each leaflet marked with an irregular blotch of pale green. The younger leaves are lighter green than the older ones and in the bud are neatly folded together, the middle leaflet inside the other two. The leaflets fold back, when it is either too hot or too cold to suit the plant. The delicate flowers are about an inch and a half across, white, pale pink, or rose-color, often veined with deeper color and with a spot of yellow at the base of each petal, and well set off by the foliage, which makes patches of rich and variegated green in dense forest shade.

Redwood Sorrel--O. Oregana.]

GERANIUM FAMILY. Geraniaceae.

Not a large family, herbs, of temperate regions; leaves lobed or compound, usually with stipules; flowers perfect; sepals and petals usually five and stamens five or ten; ovary superior; fruit a capsule.

There are many kinds of Geranium; stems with swollen joints; stipules papery; five glands on the receptacle, alternating with the petals; stamens ten, five long and five short, filaments united at base; ovary with a beak formed by the five-cleft style, and becoming a capsule, which splits open elastically, the style-divisions becoming tails on the seeds. The Greek name means "crane," in allusion to the long beak of the capsule, and these plants are often called Crane's-bill. Cultivated Geraniums are Pelargoniums, from South Africa.

In the Sierra woods, and along Yosemite roadsides, in summer we see the purplish-pink blossoms and nodding buds of this attractive plant, resembling the Wild Geranium of the East, growing from thick, perennial roots, with hairy, branching stems, from one to two feet high. The hairy leaves, with three or five, toothed lobes, are fragrant like cultivated geraniums; the flowers, over an inch across, are hairy inside, the petals veined with magenta. They are occasionally white and the plants vary in size and hairiness. G. furcàtum, of the Grand Canyon, has magenta petals, which turn back more.