The Indian Strawberry Cactus, also, is built up of cylindrical tapered stems, in groups of ten or twelve, of uneven heights up to a foot, with a dozen or so wavy ribs and clustered radially formed spines, a half-inch or so in length, wide-spreading and lying close to the stem. The stems are a medium deep green. The radials are of a white cast toning into brown at the tips, the stout centrals dark brown and curving upwards. All the thorns have swollen bases and are more or less variable in color. The flowers are of deep purple and about three inches broad and long. There are as many as twenty petals and fourteen sepals varying from rose-pink to purple shades. The petals are spatulate and somewhat broad, the margins finely toothed. The stamens are rather short, and the anthers are yellow, while the filaments are of a light pink, toning off to green. The flowers open in the forenoon and close in the afternoon for several days in succession. The fruit is not large, no larger than a very small egg, and matures in May, when the colorings range from pink to red or yellow. When fully ripe the little spine clusters are easily rubbed off, so that it is not hard for natives to handle the fruit. How to grow Larger plants are not injured by zero temperatures; in colder winter weather plants require some protection or may be grown in cool, sunny glass houses. They may be transplanted at any season in gravelly or loamy soil irrigated enough to retain moisture during the growing season. Young plants grow easily from seed sown in flats or pots in sandy or loamy soil with some shade and with enough water to keep the soil moist. Rainbow Cactus; Cabecita del Viejo (_Echinocereus rigidissimus_) (Named _rigidissimus_ from the stiff spines) How to identify and how it grows