Giant sequoia, (Sequoiadendron giganteum), also called Sierra redwood, coniferous evergreen tree of the cypress family (Cupressaceae), the largest of all trees in bulk and the most massive living things by volume.
In the form of conifers, a class including pines, firs, cypresses and gymnosperms remain one of the dominant types of plant on Earth, particularly in the Northern Hemisphere. Some of the biggest plants on earth, like the sequoia, aka the Giant Redwood, which is a type of cypress, are gymnosperms.
