Sequoioideae

| image = US 199 Redwood Highway.jpg | image_caption = Redwood Highway, California ''Sequoia sempervirens'' | taxon = Sequoioideae | authority = | subdivision_ranks = Genera | subdivision = * ''Sequoia'' * ''Sequoiadendron'' * ''Metasequoia'' *''Austrosequoia''? }}

Sequoioideae, commonly referred to as redwoods, is a subfamily of coniferous trees within the family Cupressaceae, that range in the northern hemisphere. It includes the largest and tallest trees in the world. The trees in the subfamily are amongst the most notable trees in the world and are common ornamental trees. The subfamily reached its peak of diversity during the early Cenozoic. Provided by Wikipedia