St. John's-wort--Hypericum formosum var. Scouleri.
Creeping St. John's-wort--H. anagalloides.]
A very small family, with one genus and only a few species; natives of the Southwest and Mexico; the flowers are brilliant red, in terminal clusters; the sepals five, not united; the petals five, united into a tube, the lobes somewhat spreading; the stamens ten to fifteen, protruding, inserted under the pistil; the ovary imperfectly three-celled; the styles three, long, somewhat united; the seeds three to six, oblong, flattened, surrounded by a membranous wing or long, white hairs. These plants are very puzzling, but interesting, and as they are not nearly related they have at various times been classified with other families.
[Sidenote: =Flaming Sword, Ocotillo, Candle Flower= _Fouquièra spléndens_ =Red Spring Ariz., Cal., New Mex.=]
A magnificent desert shrub, when in full bloom, but strangely forbidding in aspect in spite of its beauty. Its many stiff stems, from six to twenty feet tall, entirely without branches, stand up stiffly from the root, like a bunch of wands, and are armed their whole length with terrible thorns, which in the spring are masked with beautiful foliage, like little apple leaves. From the tip of each wand springs a glorious cluster, from six to ten inches long, composed of hundreds of scarlet flowers, each about an inch long, and crowded closely together, suggesting a flame and waving to and fro in the wind with a startling effect against the pale desert sand. When the flowers and leaves are gone, the clumps of dry, thorny sticks look quite dead and it is hard to believe that they were so splendid early in the season. They make an impenetrable fence and are much used by the Indians for hedges.
[Illustration: Flaming Sword--Fouquiera splendens.]
A rather large family, widely distributed, but we have only three genera, the principal one being Viola, which is the ancient Latin name, used by Virgil.
There are many kinds of Viola, widely distributed, blooming in spring, but often flowering again in the autumn; low, perennial herbs, with stipules; leaves alternate, or from the root; flowers complete, irregular, nodding, nectar-yielding, usually single; sepals five, with small ear-shaped projections at the base; petals five, slightly bearded within, so as to afford a foothold for bees, the lowest petal larger and with a spur at the back; stamens five, short, with broadened filaments and anthers opening inward, so as to cover the pistil all but the end of the style, the two lower anthers with spurs at the base, which project into the spur of the petal; ovary superior and one-celled; style club-shaped, with a one-sided stigma. The flowers are often of two kinds, the earlier ones with long flower-stalks, with petals and showy, but not producing seed; the later ones with short stalks, with small or no petals, but fertile, often cleistogamous, that is, fertilized in the bud. The capsule splits open and as the three valves dry they fold firmly together lengthwise and force out the seeds.