Note: Information is dated. Do not rely on it.Sequoia. A genus of conifers, related to the cypresses and growing almost, or quite, exclusively in California. The genus consists of two species, Sequoia sempervirens, the ordinary redwood (q. v.), and Sequoia gigantea, the famous "big trees" of California. One specimen in Calaveras county, Cal., has a height of 325 feet, and a girth six feet from the ground of forty-five feet. The Mariposa grove, sixteen miles south of the Yosemite valley, contains upward of 100 trees over forty feet in circumference, one over ninety-three feet at the ground, and sixty-four feet at eleven feet higher. Some of these trees indicate an age of over 2,000 years. This grove is government property. The sequoia has been successfully introduced into England, where some of them have already attained a good height.