Question: Are the Genii Sequoia and Alpinia native to America ?

Context paragraphs:
Alpinia: Alpinia is a genus of flowering plants in the ginger family, Zingiberaceae.  It is named for Prospero Alpini, a 17th-century Italian botanist who specialized in exotic plants.  Species are native to Asia, Australia, and the Pacific Islands, where they occur in tropical and subtropical climates.  Several species are cultivated as ornamental plants. Species of the genus are known generally as shell ginger.

Sequoia (genus): Sequoia is a genus of redwood coniferous trees in the subfamily Sequoioideae of the family Cupressaceae.  The only extant species of the genus is "Sequoia sempervirens" in the Northern California coastal forests ecoregion of Northern California and Southwestern Oregon in the United States.  The two other genera, "Sequoiadendron" and "Metasequoia", in the subfamily Sequoioideae are closely related to "Sequoia".  It includes the largest trees in the world.

Renealmia alpinia: Renealmia alpinia is a flowering plant species native to the Americas, where it grows from southern Mexico through much of South America, though not in the Southern Cone.  It can also be found on several Caribbean islands.

Supporting paragraphs: Sequoia (genus) Alpinia
Answer: no