Question: Are both Xanthosoma and Tabebuia a genus of flowering plants in the same family?

<P0-S0> Colocasia is a genus of flowering plants in the family Araceae, native to southeastern Asia and the Indian subcontinent. <P0-S1>  Some species are widely cultivated and naturalized in other tropical and subtropical regions. <P0-S2>  Common names include tarul, karkala ko ganu, elephant-ear, taro, cocoyam, dasheen, chembu, champadhumpa, shavige gadde, and eddoe. <P0-S3>  Elephant-ear and cocoyam are also used for some other large-leaved genera in the Araceae, notably "Xanthosoma" and "Caladium". <P0-S4>  The generic name is derived from the ancient Greek word "kolokasion", which in the Greek botanist Dioscorides (1st century AD) meant the edible roots of both "Colocasia esculenta" and "Nelumbo nucifera". <P0-S5>  It is thought that the edible roots of "Colocasia esculenta" have been cultivated in Asia for more than ten thousand years. <P0-S6>  The species "Colocasia esculenta" is an invasive species in wetlands along the American Gulf coast, where it threatens to displace native wetland plants. <SEP> <P1-S0> Xanthosoma is a genus of flowering plants in the arum family, Araceae. <P1-S1>  The genus is native to tropical America but widely cultivated and naturalized in other tropical regions. <P1-S2>  Several are grown for their starchy corms, an important food staple of tropical regions, known variously as "malanga", "otoy", "otoe", cocoyam (or new cocoyam), "tannia", "tannier", "yautía", "macabo", "ocumo", "macal", "taioba", "dasheen", "quequisque", "ʻ ape" and (in Papua New Guinea) as Singapore taro ("taro kongkong"). <P1-S3>  Many other species (including especially "X. roseum") are used as ornamental plants, and in popular horticultural literature are known as ‘ape or elephant ear (from the purported resemblance of the leaf to an elephant's ear), although the latter name is sometimes also applied to members with similar appearance and uses in the closely related genera "Caladium", "Colocasia" (i.e., taro), and "Alocasia". <SEP> <P2-S0> Tabebuia is a genus of flowering plants in the family Bignoniaceae. <P2-S1>  The common name "roble" is sometimes found in English. <P2-S2>  "Tabebuias" have been called "trumpet trees", but this name is usually applied to other trees and has become a source of confusion and misidentification. <SEP> <P3-S0> Ekmanianthe is a genus of flowering plants in the family Bignoniaceae. <P3-S1>  It is most closely related to "Tabebuia" and has sometimes been included within it. <P3-S2>  It consists of two species of trees, neither of which is especially common in any part of its range. " <P3-S3> Ekmanianthe longiflora" grows to 18 m in height and is native to Haiti and the rocky uplands of central Cuba. " <P3-S4> Ekmanianthe actinophylla" is a smaller tree, to 10 m in height, and it occurs in western Cuba where it is known as "roble caimán", for the resemblance of its trunk bark to the hide of a caiman. <P3-S5>  "Roble" is a Spanish name that is also applied to "Tabebuia". <P3-S6>  Neither of the species of "Ekmanianthe" is known in cultivation. <P3-S7>  The type species for "Ekmanianthe" is "E. longiflora". <P3-S8>  The wood of "Ekmanianthe" has been variously described as "soft" or as "very hard, heavy, and strong". <P3-S9>  It is probably useful, but the tree is rarely recognized by lumberjacks.