A total of 45 photos of sequoia and redwood trees are included in this gallery. Both are members of the family Cupressaceae and subfamily Sequoioideae. The genera of the subfamily Sequoioideae are Sequoia, Sequoiadendron, and Metasequoia. The term sequoia and redwood are used interchangeably but for taxonomic purposes, the species Sequoiadendron giganteum are called giant sequoias or Sierra redwoods, the species Sequoia sempervirens are called coastal redwoods, and the species Metasequoia glyptostroboides are called dawn redwoods. Giant sequoias (Sequoiadendron giganteum) have immense trunks and are the largest trees by volume in the world; coastal redwoods (Sequoia sempervirens) are the world's tallest trees and have slender trunks.